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Class Number Class Name Patents
502 Catalyst, solid sorbent, or support therefor: product or process of making 99,964
260 Chemistry of carbon compounds 1,811
585 Chemistry of hydrocarbon compounds 43,586
423 Chemistry of inorganic compounds 96,601
436 Chemistry: analytical and immunological testing 102,832
204 Chemistry: electrical and wave energy 90,017
429 Chemistry: electrical current producing apparatus, product, and process 91,772
71 Chemistry: fertilizers 8,574
518 Chemistry: fischer-tropsch processes; or purification or recovery of products thereof 4,761
435 Chemistry: molecular biology and microbiology 387,167
530 Chemistry: natural resins or derivatives; peptides or proteins; lignins or reaction products thereof 123,870
23 Chemistry: physical processes 2,334
507 Earth boring, well treating, and oil field chemistry 19,673
205 Electrolysis: processes, compositions used therein, and methods of preparing the compositions 47,038
55 Gas separation 47,758
96 Gas separation: apparatus 29,812
95 Gas separation: processes 28,702
556 Organic compounds -- part of the class 532-570 series 30,370
558 Organic compounds -- part of the class 532-570 series 27,069
560 Organic compounds -- part of the class 532-570 series 54,833
562 Organic compounds -- part of the class 532-570 series 39,376
564 Organic compounds -- part of the class 532-570 series 52,257
568 Organic compounds -- part of the class 532-570 series 59,305
570 Organic compounds -- part of the class 532-570 series 9,427
554 Organic compounds -- part of the class 532-570 series 12,685
552 Organic compounds -- part of the class 532-570 series 11,516
549 Organic compounds -- part of the class 532-570 series 57,005
532 Organic compounds -- part of the class 532-570 series 15
534 Organic compounds -- part of the class 532-570 series 20,660
536 Organic compounds -- part of the class 532-570 series 115,539
540 Organic compounds -- part of the class 532-570 series 34,523
544 Organic compounds -- part of the class 532-570 series 106,193
546 Organic compounds -- part of the class 532-570 series 105,959
548 Organic compounds -- part of the class 532-570 series 101,105
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 9,031
930 Peptide or protein sequence 7,919
430 Radiation imagery chemistry: process, composition, or product thereof 201,947
 
 
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