US Patent Classes - Chemical Group
US Patent Classes - Chemical Group
This is the index page for those US patent classes dealing with chemistry,
health, and agriculture There are six sub-groups of classes, as follows.
BIOCHEMISTRY
- Class: 127 Sugar, starch, and carbohydrates
- Class: 800 Multicellular living organisms and unmodified parts thereof
- Class: 435 Chemistry: molecular biology and microbiology
- Class: 436 Chemistry: analytical and immunological testing
- Class: 930 Peptide or protein sequence
- Class: 935 Genetic engineering: recombinant dna technology, hybrid or fused cell technology, and manipulations of nucleic acids
- Class: 514 Drug, bio-affecting and body treating compositions [66K]
- Class: 424 Drug, bio-affecting and body treating compositions
CHEMICAL ENGINERING
- Class: 427 Coating processes
- Class: 502 Catalyst, solid sorbent, or support therefor: product or process of making
- Class: 210 Liquid purification or separation
- Class: 205 Electrolysis: processes, compositions used therein, and methods of preparing the compositions
- Class: 201 Distillation: processes, thermolytic
- Class: 202 Distillation: apparatus
- Class: 203 Distillation: processes, separatory
- Class: 494 Imperforate bowl: centrifugal separators
- Class: 422 Chemical apparatus and process disinfecting, deodorizing, preserving, or sterilizing
- Class: 95 Gas separation: processes
- Class: 96 Gas separation: apparatus
- Class: 55 Gas separation
- Class: 261 Gas and liquid contact apparatus
- Class: 159 Concentrating evaporators
- Class: 588 Hazardous or toxic waste destruction or containment
- Class: 23 Chemistry: physical processes
- Class: 8 Bleaching and dyeing; fluid treatment and chemical modification of textiles and fibers
- Class: 184 Lubrication
- Class: 148 Metal treatment
- Class: 366 Agitating
- Class: 44 Fuel and related compositions
- Class: 196 Mineral oils: apparatus
- Class: 208 Mineral oils: processes and products
- Class: 134 Cleaning and liquid contact with solids
- Class: 34 Drying and gas or vapor contact with solids
ORGANIC CHEMISTRY
- Class: 71 Chemistry: fertilizers
- Class: 512 Perfume COMPOSITIONS
- Class: 260 Chemistry of carbon compounds
- Class: 518 Chemistry: Fischer-Torpsch processes; or purification or recovery of products thereof
- Class: 520 SYNTHETIC RESINS OR NATURAL RUBBERS
- Class: 521 .Ion exchange resins; cellular products (foams)
- Class: 522 .Resins prepared by wave energy
- Class: 523 .Resins with nonreactive additives
- Class: 524 .Resins with nonreactive additives
- Class: 525 .Mixed synthetic resins, block or graft copolymers
- Class: 526 .Resins by reaction zone features
- Class: 527 .Polymers from specialized reactants (e.g. protein, carbohydrate)
- Class: 528 .Resin condensates (from various starting materials, e.g. phenols)
- Class: 530 Natural resins or derivatives; peptides or proteins; lignins
- Class: 532 Glossary of terms used in 532-570
- Class: 534 .Noble gas, radioactive or rare earth metal
- Class: 536 .Carbohydrates
- Class: 540 .Heterocyclic compounds - seven or more ring members
- Class: 544 ..Six-membered ring with more than one hetero nitrogen
- Class: 546 ..Six-membered ring with one hetero nitrogen
- Class: 548 ..Five-, four-, or three-membered ring
- Class: 549 ..Hetero sulfur or oxygen
- Class: 552 .Azides, triphenylmethanes
- Class: 260 .Carbocyclic or acyclic
- Class: 552 ..Anthrones, anthranols, quinones, steroids
- Class: 554 ...Fatty acids, salts, esters or amides
- Class: 556 ..Heavy metal, aluminum, or silicon containing
- Class: 558 ..Esters
- Class: 560 ..Esters
- Class: 562 ..Organic acids, acid halides, acid anhydrides, selenium or tellurium compounds
- Class: 564 ..Urea adducts, amino nitrogen compounds
- Class: 568 ..Boron, phosphorus, sulfur or oxygen compounds
- Class: 570 ..Halogen containing
- Class: 585 Chemistry of hydrocarbon compounds
- Class: 987 Organic compounds containing a Bi, Sb, As, or P atom or containing a metal atom of the 6th to 8th group of the periodic system
SURGERY, BODY CARE, COSMETICS
MATERIALS, COMPOSITIONS AND EXPLOSIVES
- Class: 65 Glass manufacturing
- Class: 252 Compositions
- Class: 505 Superconductor technology: apparatus, material, process
- Class: 428 Stock material or miscellaneous articles [49K]
- Class: 156 Adhesive bonding and miscellaneous chemical manufacture [48K]
- Class: 420 Alloys or metallic compositions
- Class: 75 Specialized metallurgical processes, compositions for use therein, consolidated metal power compositions, etc.
- Class: 507 Compositions or methods of preparation or mere methods of using said compositions or a compound: for earth boring, etc.
- Class: 106 Compositions: coating or plastic
- Class: 501 Compositions: ceramic
- Class: 423 Chemistry of inorganic compounds
- Class: 71 Chemistry: fertilizers
- Class: 419 Powder metallurgy processes
- Class: 102 Ammunition and explosives
- Class: 149 Explosive and thermic compositions or charges
- Class: 86 Ammunition and explosive-charge making
- Class: 89 Ordnance
- Class: 42 Firearms
- Class: 34 Drying and gas or vapor contact with solids
- Class: 148 Metal treatment
- Class: 366 Agitating
AGRICULTURE AND FARMING
- Class: 99 Foods and beverages: apparatus
- Class: 426 Food or edible material: processes, compositions, and products
- Class: 111 Planting
- Class: 166 Wells
- Class: 449 Bee culture
- Class: 452 Butchering
- Class: 43 Fishing, trapping, and vermin destroying
- Class: 47 Plant husbandry
- Class: 119 Animal husbandry
- Class: 54 Harness
- Class: 56 Harvesters
- Class: 59 Chain, staple, and horseshoe making
- Class: 168 Farriery
- Class: 231 Whips and whip apparatus
- Class: 131 Tobacco
- Class: 239 Fluid sprinkling, spraying, and diffusing
- Class: 426 Food or edible material: processes, compositions, and products
- Class: 504 Plant protecting and regulating compositions
- Class: 147 Coopering
- Class: 71 Chemistry: fertilizers
- Class: 256 Fences