C07C 51/16
Preparation of carboxylic acids or their salts, halides or anhydrides: by oxidation
Official title: by oxidation (C07C51/145 takes precedence)
C07C51/16 (Preparation of carboxylic acids or their salts, halides or anhydrides: by oxidation) appears on 3,269 US grants and 2,025 published applications in this corpus.
Search patents in C07C- Granted patents
- 3,269
- Published applications
- 2,025
- Assignees
- 918
- Inventors
- 5,361
- Latest grant
- 22 Sep 2026
Filings by year
| Year | Granted patents | Published applications |
|---|---|---|
| 1976 | 119 | 0 |
| 1977 | 92 | 0 |
| 1978 | 107 | 0 |
| 1979 | 77 | 0 |
| 1980 | 82 | 0 |
| 1981 | 87 | 0 |
| 1982 | 83 | 0 |
| 1983 | 58 | 0 |
| 1984 | 59 | 0 |
| 1985 | 65 | 0 |
| 1986 | 48 | 0 |
| 1987 | 36 | 0 |
| 1988 | 40 | 0 |
| 1989 | 63 | 0 |
| 1990 | 45 | 0 |
| 1991 | 47 | 0 |
| 1992 | 68 | 0 |
| 1993 | 59 | 0 |
| 1994 | 47 | 0 |
| 1995 | 46 | 0 |
| 1996 | 45 | 0 |
| 1997 | 40 | 0 |
| 1998 | 60 | 0 |
| 1999 | 57 | 0 |
| 2000 | 66 | 0 |
| 2001 | 65 | 30 |
| 2002 | 96 | 93 |
| 2003 | 82 | 86 |
| 2004 | 73 | 130 |
| 2005 | 53 | 112 |
| 2006 | 94 | 129 |
| 2007 | 68 | 115 |
| 2008 | 81 | 88 |
| 2009 | 88 | 83 |
| 2010 | 68 | 97 |
| 2011 | 76 | 92 |
| 2012 | 61 | 76 |
| 2013 | 69 | 91 |
| 2014 | 71 | 88 |
| 2015 | 107 | 103 |
| 2016 | 96 | 102 |
| 2017 | 73 | 65 |
| 2018 | 61 | 50 |
| 2019 | 57 | 49 |
| 2020 | 53 | 61 |
| 2021 | 39 | 52 |
| 2022 | 29 | 45 |
| 2023 | 31 | 47 |
| 2024 | 36 | 60 |
| 2025 | 17 | 43 |
| 2026 | 29 | 38 |
By publication year. Applications have been published since 2001. 2026 runs to 8 Oct.
Subgroups
Granted patents
- C07C 51/21With molecular oxygen2,526
- C07C 51/31Of cyclic compounds with ring-splitting402
- C07C 51/285With peroxy-compounds142
- C07C 51/27With oxides of nitrogen or nitrogen-containing mineral acids94
- C07C 51/29With halogen-containing compounds which may be formed in situ87
- C07C 51/295With inorganic bases52
- C07C 51/305With sulfur or sulfur-containing compounds23
Recent patents
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- Two-stage preparation process for α,ß-ethylenically unsaturated carboxylic acids and plant for the purpose1 Sep 2026US 12,723,015 B2BASF SE
- Method for producing (meth)acrolein and method for producing (meth)acrylic acid25 Aug 2026US 12,715,833 B2Mitsubishi Chemical Corporation
- Method for manufacturing aromatic nitrile compound25 Aug 2026US 12,715,840 B2Ube Corporation
- Cellulose ester compositions derived from recycled Cellulose ester content syngas25 Aug 2026US 12,715,938 B2Eastman Chemical Company
- Fatty acid mimetics as modulators of gpr40 and/or gpr12020 Aug 2026US 2026/0242324 A1Trustees of Dartmouth College
- Method of converting polymer comprising benzenoid rings into oxidation products13 Aug 2026US 2026/0234362 A1Agency for Science, Technology and Research
- Process for synthesis of dihydroxy-dicarboxylic acid biphenyl compounds6 Aug 2026US 2026/0225986 A1Mosaic Materials, Inc.
- Systems and methods for production of acrylic acid30 Jul 2026US 2026/0217637 A1
- Method for preparing acrylic acid30 Jul 2026US 2026/0217639 A1LG Chem.Ltd.
Most cited
By later US patents
- Organometallic fluorenyl compounds, preparation, and use147US 5,436,305 APhillips Petroleum Company · 1995
- Process for the production of fiber-grade terephthalic acid129US 4,158,738 AE. I. Du Pont de Nemours and Company · 1979
- Process for producing terephthalic acid by catalytic liquid phase oxidation of para-xylene124US 3,996,271 AMitsui Petrochemical Industries, Ltd. · 1976
- Phase transfer catalysis of heterogeneous reactions by quaternary salts123US 3,992,432 AContinental Oil Company · 1976
- Method for producing an unsaturated carboxylic acid121US 5,380,933 AMitsubishi Kasei Corporation · 1995