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:


ZEARALANONE ......................... 549/270

ZEFRAN T M (POLYACRYLONITRILE
 PYRROLIDONE) .......................526/264

ZEIN (SEE PROTEIN) .................. 530/373
  COMPOSITIONS CONTAINING ...........106/149+

ZEOLITES (SEE MOLECULAR SIEVE) ...... 423/700+
  COMPOSITIONS CONTAINING ...........502/60
  LIQUID PURIFICATION ...............210/263+
     EXTERNAL REGENERANT SUPPLY .....210/190+
     PROCESS ........................210/660+

ZERO INSERTION OR SUPPRESSION
  SELECTIVE PUNCHING ................234/24

ZERO SETTING DEVICES
  DISPENSER WITH REGISTER ...........222/32+
     SELECTIVELY PRESET CUTOFF ......222/16
  REGISTER ..........................235/144.R

ZINC
  ALLOYS ............................420/513
     ALUMINUM .......................420/540
     ALUMINUM COPPER ................420/431
     COPPER .........................420/477
     COPPER TIN .....................420/476
     COPPER TIN LEAD ................420/475
  BATTERIES .........................429
  COMPOUND INORGANIC ................423
     FLUORESCENT COMPOSITIONS
       CONTAINING ...................252/301.6R
     HALIDES ........................423/462
     INORGANIC ......................423
     ORGANIC ........................556/118+
       DITHIOPHOSPHATES .............556/25
       THIOCARBAMATES ...............556/38+
     OXIDES AND HYDROXIDES ..........423/622
     PAINT CONTAINING ...............106/254+
     PHOTO CONDUCTIVE ...............430/87
     PIGMENT FILLER OR AGGREGATE ....106/419+
     RETORTS ........................266/153
     ZINCATES .......................423/592+
  ELECTRODEPOSITION .................205/305+
  ELECTROLYTIC SYNTHESIS
     AQUEOUS BATH ...................204/114+
     FUSED BATH .....................204/66
  ELECTROTHERMIC PROCESSES ..........75/10.1+
     VOLATILIZATION OF ZINC .........75/10.3+
  HEAT TREATMENT ....................148/705
  HYDROMETALLURGY ...................75/711+
  MISC  CHEMICAL MANUFACTURE ........156/DIG.77
  PLATING ...........................427/433
     ELECTROLYTIC ...................205/305+
  PYROMETALLURGY ....................75/654+
     COMBINED WITH HYDROMETALLURGY ..75/431

ZIPPER .............................. 24/381+
  FASTENING TO TAPE .................29/766+
  LUGGAGE ...........................190/903*
  MAKING ............................29/408+
  PLASTIC CASTING ON TAPE ...........264/252
  X-ART, PACKAGE CLOSURES ...........206/810*
  X-ART, PLASTIC ARTICLES ...........425/814*

ZIRCONATE CERAMIC COMPOSITIONS ...... 501/134+


ZIRCONIUM
  ALLOYS ............................420/422
  COMPOUNDS
     ORGANIC ........................556/51+
     RECOVERY OF INORGANIC ..........423/69
     REFRACTORY COMPOSITION .........501/94
  ELECTROLYTIC PRODUCTION ...........204/64.T+
  ELECTROLYTIC PRODUCTION ...........204/105.R
  HEAT TREATMENT ....................148/672
  MISC  CHEMICAL MANUFACTURE ........156/DIG.95
  PYROMETALLURGY ....................75/612+

ZITHERS ............................. 84/285+

ZONE MELTING
  CRYSTALLIZATION ...................156/620.7+
  ELECTRIC FURNACE ..................373/17
  INDUCTION FURNACE .................373/139

ZOOTECHNY
  BREAKING AND TRAINING .............119/712+
  HARNESS ...........................54
     BREAKING AND TRAINING ..........54/71+
  PROPAGATION AND CARE OF ANIMALS ...119
  TRAPS .............................43/58+

ZWIEBACK ............................ 426/618+
  MORTARED ..........................52/415+
  MORTARED ..........................52/415+