Index to the US Patent Classification

Index to the US Patent Classification

What follows is part of the Index to the US Manual of Classifications for patents. As you scroll through the list and encounter a class/subclass of interest, you can jump back to the top and retreive patent titles by entering the class/subclass in the box below.


Enter a class/subclass code here to get a list of patent titles. Use any of the following forms:
363-131 121-55A 14-.5
that is, no embedded spaces, class and subclass seperated by a dash, and any subclass letters capitalized. Currently Design Patent titles (those in the classes of the form Dxx.yy) are not retreivable.

Enter class/subclass code:


INFERENCE ENGINE SEE EXPERT SYSTEMS

INFLAMMABILITY TESTERS .............. 73/36

INFLATION, INFLATED & INFLATABLE
  ABRADING TOOL .....................51/372+
  AIRSHIP ...........................244/98
  ARTICLE FILLING ...................137/223+
  CATHETERS .........................604/96+
  CLOTHES FORM ......................223/67
  COMPOSITIONS, RAPID ...............149
  COMPOSITIONS, SLOW ................252/188.1+
  DILATOR ...........................606/191+
  ELEMENT
     STATIC MOLD HAVING .............249/65
  FREIGHT BRACING BAG ...............410/119
     PANEL ATTACHED AND URGING ......410/129
     SQUEEZE INCLUDING ..............410/125
  JOINT PACKING .....................277
  LIFE PRESERVERS ...................441/90+
  LIFE RAFTS ........................441/40+
  MATTRESSES ........................5/449+
  PARACHUTE STIFFENER OR OPENER .....244/146
  PESSARIES .........................128/836
  PIPE SEAL .........................138/93
  SHIP RAISING DEVICE ...............114/54
  SHOE FORMS ........................12/114.4
  SYRINGE NOZZLE ....................604/275
  TIRE FILLING DEVICES ..............222/3+
     PORTABLE RECEPTACLE TYPE .......141/38
     VEHICLE ATTACHED ...............417/231+
     WITH NONGASEOUS MATERIAL .......141/38
  TIRE PER SE .......................152
  TIRE SIGNAL .......................116/34.R
  TOYS ..............................446/220+
     DESIGN .........................D21/59+
  TRUSS .............................128/118.1
  VALVES ............................137/223+


INFORMATION SEARCH & RETRIEVAL
  ARTIFICIAL INTELLIGENCE ...........395/934*
  DYNAMIC SYSTEMS ...................369
     MAGNETIC .......................360
  REGISTERS SYSTEM ..................377
  STATIC SYSTEMS ....................365
  TESTING OF SYSTEM BY DIGITAL SIGNAL371/21.1+

INFRARED (SEE HEAT)
  DETECTION OF ......................250/338.1
  DRYING PROCESS WITH ...............34/39+
  GENERATOR .........................392/407
  GENERATOR .........................219/553
  GENERATOR ULTRAVIOLET AND .........250/495.1
  HAZARDOUS OR TOXIC WASTE588
     DESTRUCTION ....................588
  HEATER ............................392/407
  HEATER ............................219/553
     LAMP ...........................313/110
  PHOTOGRAPHY .......................430/348+
  RADIATION IMAGING .................430/944*
  SENSITIVE COMPOSITION .............430/616
  TELESCOPE .........................250/338.1
  TESTING WITH ......................250/338.1
  TREATMENT OF FLUIDS ...............250/432.R

INFUSING(SEE EXTRACTING AND EXTRACTS)
  APPARATUS AND APPLIANCES
     BEVERAGE .......................99/279+
     BEVERAGE,REUSABLE ..............99/323
     CLOSET OR SINK COMBINED ........4/222+
     MEDICATORS .....................604/131+
  INFUSER, TEABAG ...................D01/199
  SLOW DIFFUSER .....................239/34+
     SPECIAL RECEPTACLE AND PACKAGE .206


INGOT
  CASTING ...........................164
  FEEDING & ORIENTING ...............198/373
  HANDLING ..........................193
  MOLDS .............................249/174
     COMPOSITE ......................249/84
  POWDER METALLURGY .................419
  STRIPPER ..........................164/405+
  STRUCTURE .........................428/585+
     DESIGN .........................D15/144
  TURNING DEVICES FOR ROLLING MILLS .72/227+

INHALERS
  ARTIFICIAL RESPIRATOR .............128/28+
  INHALANTS .........................424
  MEDICATED .........................128/203.12+

INHERITANCE ......................... 395/65

INHIBITORS .......................... 252/380+

INITIATION CEREMONY DEVICES ......... 472/51+

INJECTION
  CONDENSERS ........................261/76
  FOOD PICKLING NEEDLE ..............99/532+
  MOLDING ...........................425/542+
  NEEDLELESS HYPODERMIC .............604/68+
  PLANT INJECTION ...................47/57.5
  PUMPS .............................417/151+
  SURGICAL INSTRUMENTS ..............604/187+


INJECTORS
  BATHTUB COMBINED ..................4/541.1+
  BOILER CIRCULATION ................122/407
  BOILER CLEANERS ...................122/404
  EMBALMER ..........................27/24.1
  FOOD PICKLING NEEDLE ..............254/2.R+
  FUEL
     COMBUSTION PRODUCTS GENERATOR ..60/740+
     ROTARY PISTON ENGINE COMBINED ..123/205+
  FURNACE DRAFT REGULATOR ...........110/150
  GAS AND LIQUID CONTACT DEVICES ....261/76+
  HARDENABLE MATERIAL     405/269
     INTO EARTH FORMATION ...........405/269
  HYPODERMIC ........................604/187+
  LUBRICATORS .......................184/39.1
  MEDICATOR GAS .....................604/23+
  MINERAL OIL DISTILLATION
     VAPORIZERS .....................196/127
     VAPORIZING CIRCULATION .........196/126
  MOLDING
     METAL APPARATUS ................164/303+
     METAL METHOD ...................164/113+
  NOZZLE ............................239
  PLANT HUSBANDRY ...................47/57.5
  PNEUMATIC CONVEYORS ...............406/194
  PUMPS .............................417/151+
  RESILIENT TIRE CEMENT .............81/15.5
  TEXTILE FLUID TREATING APPARATUS ..68/201
  TRACK BED TAMPERS .................104/11

INK (SEE PRINTING)
  BOTTLE ............................D09
  CARTRIDGE RUPTURABLE ..............401/132+
  COMPOSITIONS ......................106/20.R+
  ELECTROLESS  COATING ..............106/1.5+
  ERADICATOR ........................252/89.1+
  GUARDS PENHOLDER COMBINED .........15/443
  MAKING INKWELL ....................15/257.7
  REPELLENT
     ANTISMUT DEVICES ...............101/422
     COMPOSITIONS ...................106/2
  STANDS (SEE INKWELL) ..............248/127+
     CALENDAR COMBINED ..............40/358
     DESIGN .........................D19/93+
     DISPENSER TYPE .................222/577
     PEN ENGAGED CLOSURE ............15/257.75
     PEN RACK COMBINED ..............211/69.2+
  TESTING OF ........................73/150.R


INK JET MAKING ...................... 29/890.1

INK JET PRINTING .................... 346/75
  CARBON COMPOUND DIGEST ON INK .....260/DIG.38
  MARKERS OR DRIVING MEANS THEREOF ..346/140.R

INKERS
  BED AND PLATEN PRINTING MACHINE ...101/287+
     SELECTIVE OR PROGRESSIVE .......101/93+
  BOOT AND SHOE SOLE EDGE ...........118/200+
  INTAGLIO PRINTING .................101/150+
  MULTICOLOR PRINTING ...............101/171+
  NUMBERING MACHINE BED AND PLATEN
     TYPE ...........................101/78+
  PADS AND FORMS ....................118/264+
  PERFORATOR COMBINED E.G., TATTOOER 81/9.22
  PLANOGRAPHIC PRINTING .............101/134
  PRINTING ..........................101/335+
  PRINTING MEMBERS COMBINED .........101/327+
     SELECTIVE OR PROGRESSIVE .......101/103+
  RECORDER STYLUS ...................346/140.R
  ROLLING CONTACT PRINTING ..........101/212+
  STENCIL ...........................101/114+
  STENCIL TYPE ADDRESSING MACHINE ...101/48+
  STRAIGHT LINE SCRIBER .............33/34+
     DOTTED LINE ....................33/39.1+
       HAND PEN .....................33/39.2
  TELEGRAPH CODE RECORDER ...........178/96
  TYPEWRITER ........................40/191+
     BAR ............................40/470+
     RIBBON .........................40/197+

INKWELL ............................. 15/257.7+
  CABINET WITH ......................312/232
  DESK ATTACHED .....................108/26.2
  DISPENSER TYPE ....................222/576+
     INKSTAND .......................222/577
  INKSTAND ..........................248/127+
     MOVABLE INKWELL ................248/128+
     STATIONARY INKWELL .............248/146+
  PEN RACK COMBINED .................211/69.2+


INLAID
  LINOLEUM ..........................428/57+
     LAMINATING .....................156
     MOLDING ........................425
  ORNAMENTATION .....................428/77+
  PARQUET FLOORS (SEE PARQUETRY) ....52/315
  TREADS TIRES HAVING ...............152/188

INNER TUBES SEE TIRE PNEUMATIC
  TIRE MAKING .......................156/118+

INNERSOLES, FOR SHOES ............... D02/961

INOCULATION
  ANTIGENS AND SERA .................424/88+
  FERMENTATIVE ......................435/30

INORGANIC COMPOUNDS ................. 23
  CONVERSION TO HYDROCARBON .........585/943*
  WAVE ENERGY PREPARATION ...........204/157.4+

INORGANIC SETTABLE MATERIAL106/638+
 COMPOSITIONS .......................106/638+
  BUILDING GUARD ....................52/101
  CATCHING NETS .....................43/143
  DESTROYING ........................43/132.1+
     ELECTROCUTING ..................43/112
  EXITS IN CLOSURES AND SCREENS .....160/12+
  FUMIGATORS ........................43/125+
  NETTING FOR BEDS ..................5/414+
  PRESERVING, TEACHING TAXIDERMY ....434/296+
  TRAPS .............................43/107+
     DESIGN .........................D22/122+

INOSINE ............................. 536/27.8


INOSINE PHOSPHATE ................... 536/26.74

INSECT
  CULTURE ...........................119/6.5+

INSECTICIDES ........................ 424
  COATED OR IMPREGNATED VEHICLE .....424/411+
  COATING OR PLASTIC COMPOSITIONS
     CONTAINING .....................106/15.5+
  CONTAINER .........................206/524.1
  DETERGENTS CONTAINING .............252/106+
  FERTILIZER CONTAINING .............504/101+
  GARMENT HANGERS COMBINED ..........223/86
  INSECTICIDE SPRAYER ...............D23/213+
     APPARATUS ......................239
       X-ART COLLECTION .............43/900*
     METHOD .........................43/132.1
  WATER SOFTENING OR PURIFYING
     COMPOSITIONS CONTAINING ........252/175

INSEMINATION, ARTIFICIAL ............ 604/906*

INSERTERS (SEE NAILING; STAPLING)
  ASSEMBLING APPARATUS ..............29/700+
  BELT HOOK .........................29/243.51
  BOX LINING ........................493/93+
  SAUSAGE STUFFERS ..................452/35+
  SAW TOOTH .........................76/80
  SURGICAL IMPLEMENT ................606/117+
     NEEDLE .........................606/222
  TAPE INSERTING APPAREL ............223/50
  TIRE PATCH INSERTERS ..............81/15.5+
  WICK ..............................431/120


INSERTS
  BEARING SURFACE ...................384/282+
  BEDSTEAD ..........................5/280
  BRAKE SHOES CAST ..................188/256
  COMPOSITE METAL CASTING ...........164/91+
  COOKING MOLDS .....................249/112+
  EARTH BORING BIT INSERT ...........175/426+
  GARMENT ...........................2/400
  GEARING ...........................74/451
  HOLDING
     CORE ...........................164/231
     MOLD ...........................164/332+
     PATTERN ........................164/236
  NONMETALLIC COMPOSITE CASTING .....249/83+

INSIGNIA
  APPAREL ...........................2/246
  BADGES ............................40/1.5+
  DESIGN ............................D11/95+
  EMBLEM PER SE .....................D11/99

INSOLES
  MAKING METHOD .....................12/146.B
  REINFORCING MACHINE ...............12/20
  SHOE SEE SOLES ....................36/43+
     LAMINATED ......................36/44
     PREPARED FOR SECURING ..........36/22.R
     VENTILATED .....................36/3.R
     WITH BODY TREATING MEANS .......607/144
     WITH LOCAL PADDING .............36/71
     WITH SHANK STIFFENER ...........36/76.R
  THERAPEUTIC .......................607/144

INSPECTION & INSPECTING (SEE SPECIFIC
 SUBJECT; TESTING)
  CLOTH .............................26/70
  DISPENSER WITH MEANS FOR ..........222/154+
  DRYING APPARATUS WITH MEANS FOR ...34/88
  GAUGES ............................33/501+
  LAMP FOR ..........................362/138
  MEASURING AND TESTING .............73
  METAL FOUNDING DEVICE
     WITH MEANS FOR .................164/150+
  ROBOT .............................901/44*


INSTRUMENT (SEE TYPE OF INSTRUMENT)
  BOARD .............................73/866.3
     ILLUMINATION, AUTOMOBILE .......362/61+
     SWITCH BOARDS ..................361/600+
     TELEPHONE SWITCHBOARD ..........379/319+
  CALIBRATING .......................73/1.R+
     ELECTRICAL INSTRUMENTS .........324/74+
  CASINGS ...........................73/431
  DENTAL ............................433/25+
  ELECTRIC SWITCH COMBINED WITH .....20/56.R
  FLUORESCENT OR PHOSPHORESCENT
     INDICATING .....................250/483.1
  FLYING OF AIRCRAFT ................342/407+
     APPAREL ........................33/2.R+
     AREA INTEGRATORS ...............33/121+
     DIRECTION OR FORCE INDICATOR ...33/300+
     DISTANCE .......................33/700+
     LANDING ........................342/410+
     SCRIBERS .......................33/18.1+
     STRAIGHT EDGE TYPE .............33/431+
       NAVIGATIONAL .................33/457
     STRAIGHT LINE LIGHT RAY TYPE ...33/227+
  HOUSEHOLD MEASURING ...............D10/46.2
  MATERIALS .........................33/DIG.11
  MEASURING .........................D10
  MECHANICAL EXPEDIENTS .............33/DIG.12
  MECHANISM DAMPING .................73/430
  MEDICAL ...........................D24/107+
  MUSICAL ...........................84/1+
     DESIGN .........................D17
     ELECTRICAL .....................84/600+
     STRINGED .......................84/173+
     WIND ...........................84/330+
  PANEL IN VEHICLE ..................D12/192
  PANEL MOUNTED .....................248/27.1+
  SIGNALLING ........................D10
  STERILIZING, DISINFECTING APPARATUS422
  SUPPORT HEADS FOR .................248/177+
  TESTING ...........................D10
  TRANSFORMERS ......................336

INSUFFLATORS ........................ 604/58


INSULATION AND INSULATING
  BUILDING WALL .....................52/404+
     BY LAMINA ......................52/408+
       YIELDABLE ....................52/393+
  ELECTRIC ..........................174
     BATTERY SEPARATOR ..............429/247+
     BRIDGED RAIL JOINT .............246/48
     BUSHINGS .......................174/152.R+
     CERAMIC COMPOSITION ............501/1+
     CONDUCTOR COVER BURNISHING .....29/90.5
     FLUENT COMPOSITION .............252/570+
     HANDLE .........................16/116.R+
     INDEFINITE LENGTH CONDUCTOR
       COVERING .....................156/47+
     LAMP SOCKETS ...................439
     MAGNET OR COIL TAPE ............242/7.8
     MAKING METAL PARTS FOR .........29/631
     METERS AND TESTERS .............324/555+
     PIPE JOINTS OR COUPLINGS .......285/47+
     RAIL JOINTS ....................238/152+
     RAILWAY ROLLING STOCK PARTS ....105/60
     RAILWAY TIE TIE PLATE AND RAIL .238/107+
     RING WINDING TAPE ..............242/6
     SHAFT COUPLING .................464/900*
     TROLLEY CONDUCTOR SECTION ......191/39
     TROLLEY CONDUCTOR SUPPORT ......191/42
     X-ART ..........................493/949*
  HEAT
     ALKALI METAL SILICATE106/601+
       CONTAINING COMPOSITION .......106/601+
     BOILER OUTLET FLUE .............122/164
     BOTTLE OR JAR ..................215/12.1+
     BUILDING .......................52/408+
     CABINETS .......................312/409
     CERAMIC POROUS COMPOSITION .....501/80+
     COMPOSITIONS ...................252/62
     CONTAINER ......................206/542
       X-ART ........................493/903*
     COVERING LAMINATED TYPE MAKING .156
     DOUBLE-WALL RECEPTACLE, WOODEN .217/128+
     FLATIRON BODY ..................38/89
     FLATIRON STAND OR BASE .........248/117.3+
     FLUID SPRINKLER,
       SPRAYER, DIFFUSER ............239/397.5
     GAS SEPARATOR ..................55/267
     HANDLE .........................16/116.R+
     INORGANIC INGREDIENT
       CONTAINING COMPOSITION .......106/672
     METAL RECEPTACLE SPACED WALL ...220/445+
     MUFFLER OR SOUND FILTER ........181/282
     OVEN ...........................126/273.5
     PORE FORMING COMPOSITION .......106/122
     STOCK MATERIAL .................428/920*
     TOBACCO SMOKING DEVICES ........131/194+
     WATER HEATER ...................126/375
  SOUND (SEE MUFFLER)
     AIRCRAFT BODY STRUCTURE ........244/119
     ALKALI METAL SILICATE
       CONTAINING COMPOSITION .......106/601+
     AUDITORIUM .....................181/30
     CERAMIC POROUS COMPOSITION .....501/80+
     COMPOSITIONS ...................252/62
     GAS SEPARATOR ..................55/276
     GEARING ........................74/443
     INORGANIC INGREDIENT
       CONTAINING COMPOSITION .......106/672+
     LOCK SILENCER OR MUFFLER .......70/463
     MOTION PICTURE CAMERA ..........352/35
     MUFFLER OR SOUND FILTER ........181/207+
     PIANO RESONANCE DEVICE .........84/191
     PORE FORMING COMPOSITION .......106/122
     STRUCTURE ......................181
  TAPE ..............................428/343+
     COATING ........................427/207.1+
     COATING OPPOSITE SIDES .........427/208
     PACKAGED ROLL ..................206/411

INSULATION STRIPPERS
  TUBE OR SHEATH SPLITTER ...........30/90.1+
  WIRE ..............................81/9.4+

INSULIN, T.M ........................ 530/303
  MEDICINE CONTAINING ...............514/3

INSURANCE DOCUMENTS ................. 283/54

INTAGLIO
  ELECTROLYTIC REPRODUCTION .........205/69+
  ORNAMENTATION .....................428/156+
  PHOTOGRAPHIC PRODUCTION OF ........430/307+
  PRINTING ..........................101/150+
     COMBINED WITH ANOTHER TYPE .....101/DIG.43
  STATIC MOLD FOR FORMING 249/104
     PRODUCT HAVING .................249/104


INTAKE
  CHANNEL ...........................405/127
  FILTER FOR PIPE ...................210/460+
  FLUID CURRENT CONVEYOR ............406/108+
     ADJUSTABLE .....................406/113+
     PLURAL .........................406/117+
     PNEUMATIC STRAW STACKER ........406/139+
  GRAVITY POSITIONED SPRAYER ........239/334
  PUMP ROTARY CENTER ................415/206

INTEGRATED CIRCUIT (SEE TRANSISTOR)

INTEGRATED OPTICAL CIRCUIT .......... 385/14+

INTEGRATORS
  AREA ..............................33/121+
  CALCULATORS .......................235/61.C
  DISTANCE ..........................73/490
  SHIPS LOG COMBINED ................73/183
  VELOCITY ..........................73/503
  VOLUME OR RATE OF FLOW METERS
     AREA VELOCITY ..................73/227
     PRESSURE DIFFERENTIAL TYPE .....73/861.43+
  WEIGHER COMBINED ..................177/16

INTENSIFIERS (SEE AMPLIFIERS)
  DIAPHRAGMS ACOUSTIC ...............181/157+
  PHOTOGRAPHIC ......................430/487
  TELEPHONE .........................379/156+

INTERCALATES (SEE DEFINITION NOTE (3) 428/402.2


INTERCOMMUNICATION SYSTEM
  ELECTRIC ..........................379/167+
     MULTIPLEX ......................370
     PAGING .........................340/311.1
       SELECTIVE ....................340/825.44+
  INTERCOM ..........................D14/159
  TELEPHONE-TYPE ....................D14/142+

INTERCOMPARISON
  ARTICLE OR MATERIAL ...............434/367
  PRINTED MATTER ....................281/51

INTERCONNECTION SYSTEMS ............. 307

INTERELECTRODE CAPACITANCE 324/409+
 TESTING ELECTRONIC TUBE ............324/409+

INTERFERENCE FILM ANTIREFLECTION .... 359/568

INTERFERENCE SUPPRESSION SEE
 TRANSMISSION, ELECTRIC

INTERFEROMETER ...................... 356/345+
  DIGEST ............................33/DIG.4
  HOLOGRAPHY ........................356/347
  INTERFERON ........................435/811*
  SPECTROSCOPY ......................356/346
  WITH LIGHT CONDUCTOR ..............250/227.27

INTERFERON .......................... 530/351


INTERLEAVING
  ELECTROPHOTOGRAPHIC COPIER ........355/325

INTERLEUKIN ......................... 530/351

INTERLINERS TIRES ................... 152/203+

INTERLOCK AND INTERLOCKING
  CLUTCHES AND POWER STOP CONTROL ...192
  ELECTRIC SWITCHES .................20/50.R
  MACHINE TOOL FUNCTIONS
     CUTTING MACHINE ................83/399+
     SELECTIVE CUTTING ..............234/52
  MULTIPLE CONTROLLING ELEMENTS .....74/483.R+
  NUCLEAR FUEL SEGMENTS .............376/429
  RAILWAY SWITCHES AND SIGNALS ......246/131+
  REFRIGERATION RELATED .............62/267
  SEAMS JOINTS AND CONNECTIONS
     BLOCK, ANGLE SURFACES ..........52/589+
     BLOCK, SINGLE SURFACE ..........52/593+
     BUILDING FACINGS OR SHINGLES ...52/519+
     CHAIN LOOP .....................59/3
     FLAT ROD JOINTS ................403
     FLEXIBLE ROD JOINTS ............403/206+
     METAL CONTAINER ................220/689+
     PAVEMENT BLOCK .................404/47+
     PIPE JOINTS ....................285/330
     ROAD MODULE ....................404/50+
     SHEET METAL CONTAINER MAKING ...413
     TILE WALL FACING ...............52/589+
     WIRE FABRIC INTERLOCKING LOOP ..245/5

INTERMEDIATE FREQUENCY AMPLIFIER .... 330
  TRANSFORMERS FOR ..................336
     TUNED WITH CAPACITOR ...........334/78+
     TUNED WITH SLUG ................336/130+


INTERMITTENT
  APPLIED WHEEL BRAKE ...............188/85
  CLUTCHES ..........................192
  COLORING OF THREAD ................8/149
  COMBUSTION BURSTS OR FLARE-UPS ....431/1
  DRIVE COMBINED WITH PLANETARY      475/14+
     GEARING ........................475/14+
  ELECTRIC SIGNAL CLOCK CONTROLLED ..368/98
  ENGINE VALVE ......................91
  FEED AND OR DISCHARGE
     DISINFECTING ...................422/123+
     DISPENSER TYPE .................222
     ELECTRODE ......................314
     FIBER PICKING BEATERS ..........19/92
     HARVESTER CONVEYOR BELT ........56/346+
     PLANTER ........................111/37+
     ROTARY WEB OR STRAND FEEDER ....226/152+
     SPRAYER DISCHARGE ..............239/99+
     SPRAYER SUPPLY .................239/331+
     STRIP FILM .....................352/166+
     WEB OR STRAND ..................226/120+
     WIRE ...........................72/419+
  GEAR ..............................74/435
  GRIP SEE CLUTCH; PANEL; RATCHET
     ELECTRODE FEEDER ...............314
     ENGAGING LAND VEHICLE DRIVE ....280/241
     ENGAGING LOCOMOTIVE DRIVE ......105/32
     MACHINE ELEMENT ................74/111+
     RAILWAY SIGNAL MECHANISM .......246/154
     STRIP FILM FEED ................352/191
  HARVESTER CONVEYOR BELT ...........56/183
  IMPULSE SPEED RESPONSIVE ..........73/506
  LAND VEHICLE PROPELLER ............280
  LIQUID APPLICATOR FOR TEXTILES ....68/203
  MACHINE ELEMENT ...................74
  TEXTILE SPINNING OPERATIONS
     CYCLIC .........................57/319+

INTERMODULATION
  DISTORTION TEST ...................324/624
     TELEPHONE ......................379/6
  SOUND RECORDING DISTORTION TEST ...369/58+


INTERNAL COMBUSTION ENGINES SEE CARBURETOR; CYLINDER;DECARBONIZING;
 EXHAUST, TREATMENT; FEEDER, FUEL; FUEL; LUBRICATION; MUFFLER; PISTON;
 RADIATOR; STARTER; SUPERCHARGER ....123
  BACKFIRE PREVENTER ................48/192
  DYNAMO COMBINED ...................290/7
  EXHAUST TREATMENT .................60/272+
     COMBUSTION PRODUCTS WITH .......60/39.5
  FLUID PRESSURE MOTOR COMBINED .....60/598+
     FREG PISTON DRIVE ..............60/596
     VACUUM GENERATED ...............60/397
     WASTE HEATDRIVEN MOTOR .........60/597
  LOCOMOTIVE DRIVE ..................105/62.1+
  PUMP DRIVE ........................417/364
  REFRIGERATION UTILIZING ...........62/323.1+
  TURBINE COMBINED ..................60/598+

INTERPOLES .......................... 310/186

INTERPOLYMERS (SEE ALSO SYNTHETIC     520/1+
 RESIN OR NATURAL RUBBER) ...........520/1+

INTERRUPTER
  ELECTRIC ..........................20
     BODY APPLICATION SYSTEM ........607/2+
     ELECTROLYTIC ...................361/435
     GENERATOR CONTROL ..............322/69+
     SHEET FEEDING ..................271/263
     SYSTEMS ........................307/96+
  PRINTING
     BED AND PLATEN .................101/287+
     INKER ..........................101/335+
     MULTICOLOR .....................101/171+
     PLANOGRAPHIC MULTICOLOR ........101/135+
     PLANOGRAPHIC ROTARY ............101/141+
     ROLLING CONTACT BED AND
       CYLINDER .....................101/282+
     ROLLING CONTACT ROTARY .........101/216+
  SHEET FEEDING .....................271/256+
  SIGNATURE GATHERER ................270/56


INTERVAL GENERATOR ELECTRICAL ....... 328/129.1+

INTERVALOMETERS ..................... 20/35.R+
  INTERVALOMETERS SYSTEMS ...........307/141.4

INTESTINES
  CLEANING ..........................452/123
  REMOVING ..........................452/106+

INTRAVENOUS DEVICES ................. D24/108+

INTRENCHING ......................... 42/93
  TOOLS .............................294/49+
     CUTTER COMBINED ................7/116+

INVALID
  BEDS ..............................5/600+
  CHAIR DESIGN ......................D12/128+
  FEEDING DEVICES ...................414/9
  LITTERS AND STRETCHERS ............5/81.1+
  MATTRESSES ........................5/652+

INVENTORIES ......................... 283/55
  COMPUTER CONTROLLED, MONITORED ....364/403

INVERT SUGAR ........................ 127/41

INVERTER SEE DERECTIFIER


IODIC ACID .......................... 423/481

IODIDES ............................. 423/462

IODINE .............................. 423/500+
  MEDICINES CONTAINING INORGANIC ....424/667+
  MEDICINES CONTAINING ORGANIC ......514/1+

IODOFORM ............................ 570/181

ION ................................. 65/30.13+
  EXCHANGE, LIQUID PURIFICATION .....210/660+
     FOR ACTINIDE SERIES COMPOUNDS ..423/249+
     FOR THERMONUCLEAR REACTORS .....376/146
  EXCHANGE, SYNTHETIC POLYMERS ......521/25
     TREATING POLYMERS WITH .........528/482
  GENERATING CHAMBER
     GAS TUBE .......................313/567+
     MASS SPECTROMETER TYPE (SEE ION SOURCE)
     VACUUM TUBE HAVING .............313/230
  IMPLANTATION APPARATUS ............315/111.81
  LIQUID PURIFICATION ...............210/660+
  SOURCE FOR MASS SPECTROMETRY ......313/564
     ELECTRICAL SYSTEM FOR ..........315/111.81
     HAVING HEATING MEANS ...........313/550
     WITH SPECTROMETER ..............250/281+
  TRAP ..............................335/210+
     WITH CATHODE RAY TUBE ..........313/424+
     WITH TV PICTURE TUBE ...........313/424+

ION SELECTIVE OR ION SENSITIVE
 ELECTRODE ..........................204/416+
  CHEMICAL ANALYSIS, APPARATUS ......422/82.3
     DISSOLVED GAS ..................422/82.5


IONIZATION
  CHAMBER RADIOACTIVITY .............250/335+
  GAUGE .............................250/374+
  GEIGER MULLER TUBE ................313/93
  IN THERMONUCLEAR REACTIONS ........376/100
  TISSUE EQUIVALENT .................250/472.1
     WITH TISSUE EQUIVALENT GAS .....250/336.1

IONOMER RESIN SYSTEMS (SEE SYNTHETIC RESIN OR NATURAL RUBBER)

IONONES ............................. 568/378

IRASER
  AMPLIFIERS ........................359/333+
  OSCILLATORS

IRIDIUM
  ALLOYS ............................420/461
  FILAMENTS .........................75
  INORGANIC COMPOUND RECOVERY .......423/22
  PREPARATION
     ELECTROLYTIC ...................204/109+
     HYDROMETALLURGY ................75/711+
     PYROMETALLURGY .................75/631


IRON (SEE FERROUS ALLOYS; IRONING
 DEVICES; METAL)
  BRIDGE GIRDER .....................14/74.5
  CURLING HAIR ......................D28/38
  DIES FOR MAKING
     PLOW AND CULTIVATOR ............72/472
     RAILWAY CAR ....................72/343+
     RAILWAY TRACK ..................72/343+
     VEHICLE LAND TYPE ..............72/470+
  ELECTROLYSIS ......................204/112+
  FOUNDING ..........................164
  GAS INJECTION .....................75/528+
  INORGANIC COMPOUND ................423
     COATING OR PLASTIC COMPOSITION .106/286.3
     OXIDE OR HYDROXIDE .............423/632
     TANNING ........................8/94.28
  MAKING
     FLANGED BAR ROLLING ............72/190+
     PLOW AND CULTIVATOR ............29/14
     STRUCTURE MEMBER ...............29/897+
  MISC  CHEMICAL MANUFACTURE ........156/DIG.74
  ORE BENEFICIATING .................423/1+
  ORE BRIQUETTING AND BINDING .......75/746+
     ELECTROMETALLURGICAL TREATMENT .75/10.1+
  ORGANIC COMPOUND
     AZO ............................534/692+
     CARBOCYCLIC OR ACYCLIC .........556/138+
     FERROCENES .....................556/143+
     PROTEIN OR REACTION PRODUCT ....530/400
  PIGMENTS ..........................106/456+
  PLATE .............................428/681+
  PREPARATION .......................75
     ELECTROLYTIC ...................204/112+
     INORGANIC MEDICINAL ............424/646
     ORGANIC MEDICINAL ..............514/184
  PYROMETALLURGY ....................75/433+
     COMBINED WITH HYDROMETALLURGY ..75/416+
  RAILWAY
     GRAB ...........................105/461
     JACKING POLING ROPING ..........105/462
  SHIP ..............................114/79.R+
     MAST ...........................114/94
     SPAR ...........................114/100
  SOLDERING .........................D10/46+
  STEAM .............................38/77.1+
  STRUCTURAL ELEMENTS ...............52
  TOOLS
     BRANDING ELECTRICALLY HEATED ...219/227+
       WITH INDICIA .................101/31
     BRANDING WITH HEATING BURNER ...126/402+
     CURLING ELECTRIC ...............219/222+
     CURLING WITH HEATING BURNER ....126/408+
     FLAT ...........................38/74+
     GLASS BLOW .....................65/300+
     SADIRON ELECTRIC ...............219/245+
     SADIRONS WITH HEATING BURNER ...126/411
     SOLDERING ......................228/51+
     SOLDERING ELECTRIC .............219/229+
     SOLDERING WITH HEATING BURNER ..126/413+
  VEHICLE LAND TYPE
     BODY STAY ......................296/42
     CHAFE ..........................280/161+
     HAY RACK BODY ..................296/9
     RUNNING GEAR ...................280/149
     TOP ............................296/119
  WALKING ...........................602/10
  WORKING (SEE METAL, TREATMENT;
     METAL, WORKING)
  WROUGHT PRODUCING .................75/438+

IRONE ............................... 568/378

IRONING DEVICES
  ATTACHMENT
     CORD PLUG ......................439
     CORD SUPPORT ...................248/51
  BOARD .............................38/103+
     CONVERTIBLE TO LADDER ..........182/28+
     DESIGN .........................D32/66
  COLLAR CUFF NECKBAND ..............223/52.1+
  ELECTRICALLY HEATED ...............219/245
  HAT TYPE ..........................223/21
  HEATING STOVES
     LIQUID OR GASEOUS FUEL .........126/230
     SOLID FUEL .....................126/227+
  IRON WITH LIGHT ...................362/117
  LADDER CONVERTIBLE TO IRONING
     BOARD ..........................182/29+
  LAUNDRY IRON OR PRESS .............D32/9
  PLAITING FLUTING SHIRRING TYPE ....223/36
  SELF HEATING BURNER ...............126/411+
  TABLES FOR TEXTILES ...............38/103+
  TEXTILE SMOOTHING OR PRESSING .....38
     IMPLEMENTS .....................38/69+
     MACHINES .......................38/1.R+
  THERMOSTATS .......................236/7
  TOBACCO ...........................131/324+
     STEMMING COMBINED ..............131/315+


IRRADIATION (SEE RADIANT ENERGY)
  COATING ...........................427/552+
     ELECTROMAGNETIC OR PARTICULATE  427/595+
       ENERGY UTILIZED ..............427/595+
     POLYMERIZATION UTILIZING        427/487+
       ELECTRICAL, MAGNETIC, WAVE    427/487+
       OR PARTICULATE ENERGY ........427/487+
     PRETREATMENT OF SUBSTRATE OR    427/532+
       POST-TREATMENT OF COATED      427/532+
       SUBSTRATE UTILIZING ..........427/532+
  NUCLEAR CONVERSION (SEE ALSO       376/156
     NUCLEAR REACTION OR REACTOR) ...376/156

IRRIGATION
  CHANNEL ...........................405/118+
  FURROW PLOW AND ROLLER ............172/176
  MOBILE, AMBULANT PIPELINE .........239/726+
  NOZZLES ...........................239/542
  PIPE COUPLING .....................285/5+
  PLANT HUSBANDRY
     GERMINATOR FOR SEEDS ...........47/61+
     PLANT COVER SHADE AND SCREEN ...47/27
     PLANT RECEPTACLE ...............47/79+
     SUBSOIL ........................47/48.5
  SUBSOIL ...........................405/35+
  SYRINGE ...........................604/187+

ISATIN .............................. 548/485

ISETHIONIC .......................... 562/108

ISINGLASS (SEE GLUE)

ISOBURNEOL .......................... 568/820


ISOBUTYLENE POLYMERS (SEE ALSO        526/348.7
 SYNTHETIC RESIN OR NATURAL RUBBER) .526/348.7

ISOCHONDODENDRINE ................... 546/34

ISOCYANATES
  ESTERS ............................560/330+
  FIBER MODIFICATION, CARBONATE & ...8/DIG.11
  INORGANIC .........................423/364
  POLYMER PRODUCT DERIVED FROM OR
     CONTAINING (SEE SYNTHETIC RESIN
     OR NATURAL RUBBER)
     CELLULAR POROUS PRODUCT ........521/50+

ISOCYANURATE CELLULAR PRODUCT ....... 521/902*

ISODIBENZANTHRONE ................... 552/276

ISOEUGENOL .......................... 568/652

ISOGUANOSINE (2-OXOADENOSINE) ....... 536/27.7

ISOINDOLES .......................... 548/470

ISOINDOLINES ........................ 548/482


ISOMERIZATION
  FATTY OILS ........................554/1+
  MINERAL OILS ......................208/46+
  OF HYDROCARBONS ...................585
     ALICYCLIC SYNTHESIS
       BY DOUBLE-BOND SHIFT .........585/377+
       BY DOUBLE-BOND SHIFT IN SIDE  585/363
        CHAIN .......................585/363
       BY RING OPENING OR SHIFT .....585/353
     AROMATIC SYNTHESIS .............585/477+
     IN ADDITION TO ALKYLATION ......585/332
     IN ADDITION TO HYDROGENATION ...585/253
     OLEFIN SYNTHESIS, DOUBLE-BOND   585/664+
       SHIFT ........................585/664+
     PARAFFIN SYNTHESIS .............585/734

ISONIAZIO, IN DRUG .................. 514/354

ISONITRILES ......................... 558/302

ISOPHORONE .......................... 568/377

ISOPRENE (SEE DIOLEFIN HYDROCARBON) . 585/601+
  POLYMERIZED SOLID       526/335+
     (SEE ALSO SYNTHETIC RESIN OR    526/335
     NATURAL RUBBER) ................526/335

ISOPROPYLPHENOL ..................... 568/781

ISOQUINOLINES ....................... 546/139+

ISOSTATIC PRESSING
  POWDER METALLURGY .................419/49


ISOTHIAZOLES ........................ 548/206+

ISOTHIOCYANATE ESTERS ............... 558/17+

ISOTOPE
  ACTINIDE GROUP METALS .............75/393+
  COMPARATOR ........................250/281+
  DETECTION .........................250/281+
  EXCHANGE, IN HYDROCARBON SYNTHESIS 585/941*
  NUCLEAR CONVERSION REACTIONS ......376/156
  NUCLEAR FUEL MATERIAL .............376/421
  NUCLEAR FUEL MATERIAL .............376/356
  NUCLEAR FUEL MATERIAL .............376/171
  PRODUCING .........................976/DIG.398+

  RADIOACTIVE COMPOSITION ...........252/625
  RADIOACTIVE METAL COMPOSITION .....420/1+
  SEPARATORY DISTILLATION OF ........203/5
  USING WAVE ENERGY TO ENRICH OR
     SEPARATE .......................204/157.2+

ISOUREA ............................. 558/8

ISOVIOLANTHRONE ..................... 552/276

ISOXAZOLES .......................... 548/240+

ITACONIC ACID ....................... 562/595

IUD
  PESSARIES .........................128/834+
  X-ART COLLECTION ..................525/937*


IZOD TEST ........................... 73/844