C
Chemistry
Official title: Chemistry; metallurgy
C (Chemistry) appears on 1,240,227 US grants and 1,244,239 published applications in this corpus.
Search patents in C- Granted patents
- 1,240,227
- Published applications
- 1,244,239
- Assignees
- 170,733
- Inventors
- 1,485,325
- Latest grant
- 6 Oct 2026
Filings by year
| Year | Granted patents | Published applications |
|---|---|---|
| 1976 | 17144 | 0 |
| 1977 | 15503 | 0 |
| 1978 | 16068 | 0 |
| 1979 | 11408 | 0 |
| 1980 | 14122 | 0 |
| 1981 | 15603 | 0 |
| 1982 | 13104 | 0 |
| 1983 | 13369 | 0 |
| 1984 | 14558 | 0 |
| 1985 | 14995 | 0 |
| 1986 | 13530 | 0 |
| 1987 | 14745 | 0 |
| 1988 | 14513 | 0 |
| 1989 | 17710 | 0 |
| 1990 | 17225 | 0 |
| 1991 | 18620 | 0 |
| 1992 | 19522 | 0 |
| 1993 | 20075 | 0 |
| 1994 | 19106 | 0 |
| 1995 | 18638 | 0 |
| 1996 | 19390 | 0 |
| 1997 | 21183 | 0 |
| 1998 | 25586 | 0 |
| 1999 | 26275 | 0 |
| 2000 | 25028 | 0 |
| 2001 | 27185 | 7724 |
| 2002 | 26976 | 30821 |
| 2003 | 25495 | 42955 |
| 2004 | 22779 | 43248 |
| 2005 | 18415 | 42109 |
| 2006 | 21535 | 40998 |
| 2007 | 20341 | 39950 |
| 2008 | 19387 | 41605 |
| 2009 | 20827 | 47526 |
| 2010 | 27939 | 51924 |
| 2011 | 28020 | 49801 |
| 2012 | 30493 | 47680 |
| 2013 | 33895 | 49584 |
| 2014 | 36753 | 51902 |
| 2015 | 37639 | 54398 |
| 2016 | 37511 | 54423 |
| 2017 | 39497 | 52848 |
| 2018 | 38401 | 53714 |
| 2019 | 41486 | 56083 |
| 2020 | 41709 | 57833 |
| 2021 | 38359 | 57892 |
| 2022 | 35979 | 58860 |
| 2023 | 34387 | 58405 |
| 2024 | 36192 | 59434 |
| 2025 | 36096 | 52374 |
| 2026 | 25911 | 40148 |
By publication year. Applications have been published since 2001. 2026 runs to 8 Oct.
Classes
Granted patents
- C07Organic chemistry436,160
- C08Organic macromolecular compounds251,247
- C12Biochemistry201,298
- C09Dyes164,034
- C23Coating metallic material82,130
- C01Inorganic chemistry70,922
- C10Petroleum, gas or coke industries58,193
- C04Cements47,472
All 21 classesShow fewer
- C22Metallurgy46,104
- C02Treatment of water, waste water, sewage, or sludge42,420
- C03Glass36,695
- C11Animal or vegetable oils, fats, fatty substances or waxes33,903
- C25Electrolytic or electrophoretic processes29,770
- C21Metallurgy of iron21,390
- C30Crystal growth17,714
- C40Combinatorial technology6,807
- C05Fertilisers6,474
- C06Explosives4,588
- C13Sugar industry2,189
- C14Skins1,286
- C99Subject matter not otherwise provided for in this section0
Recent patents
- Spinach plant having novel downy mildew resistance gene6 Oct 2026US 12,751,389 B2Sakata Seed Corporation
- Soybean cultivar 291209346 Oct 2026US 12,751,398 B2M. S. Technologies, L. L. C.
- Soybean cultivar 292306086 Oct 2026US 12,751,403 B2M. S. Technologies, L. L. C.
- Compositions and methods for parasite control6 Oct 2026US 12,751,453 B2Philip Morris Products S. A.
- Antiviral environment-friendly composite plating layer, preparation method therefor, and antiviral environment-friendly product6 Oct 2026US 12,751,456 B2Jomoo Kitchen&Bath Co., Ltd.
- Method for reducing nitrogen and phosphorus emission in strawberry cultivation to mitigate continuous cropping obstacles in greenhouse8 Oct 2026US 2026/0305524 A1Shandong Academy of Agricultural Sciences
- Fungus cultivation using algal biomass as substrates and methods of use thereof8 Oct 2026US 2026/0305542 A1University of Houston System
- Genetic markers for powdery mildew resistance in cannabis and related methods8 Oct 2026US 2026/0305549 A1Aurora Cannabis Enterprises Inc.
- Genetic determinants conferring improved tobrfv resistance8 Oct 2026US 2026/0305550 A1Vilmorin & Cie
- Automated liquid dispensing device8 Oct 2026US 2026/0305569 A1Automated Pet Care Products, LLC d/b/a WHISKER
Most cited
By later US patents
- Process for amplifying nucleic acid sequences5,960US 4,683,202 ACetus Corporation · 1987
- Process for amplifying, detecting, and/or-cloning nucleic acid sequences5,418US 4,683,195 ACetus Corporation · 1987
- Mutant dwarfism gene of petunia5,133US 5,523,520 AGoldsmith Seeds, Inc. · 1996
- Recombinant immunoglobin preparations4,785US 4,816,567 AGenentech, Inc. · 1989
- Natural-superlattice homologous single crystal thin film, method for preparation thereof, and device using said single crystal thin film4,076US 7,061,014 B2Japan Science and Technology Agency · 2006