C07C 51/00
Preparation of carboxylic acids or their salts, halides or anhydrides
Official title: Preparation of carboxylic acids or their salts, halides or anhydrides (of acids by hydrolysis of oils, fats or waxes C11C)
C07C51/00 (Preparation of carboxylic acids or their salts, halides or anhydrides) appears on 11,260 US grants and 7,238 published applications in this corpus.
Search patents in C07C- Granted patents
- 11,260
- Published applications
- 7,238
- Assignees
- 3,021
- Inventors
- 19,580
- Latest grant
- 6 Oct 2026
Filings by year
| Year | Granted patents | Published applications |
|---|---|---|
| 1976 | 325 | 0 |
| 1977 | 241 | 0 |
| 1978 | 288 | 0 |
| 1979 | 199 | 0 |
| 1980 | 265 | 0 |
| 1981 | 278 | 0 |
| 1982 | 264 | 0 |
| 1983 | 200 | 0 |
| 1984 | 215 | 0 |
| 1985 | 252 | 0 |
| 1986 | 212 | 0 |
| 1987 | 193 | 0 |
| 1988 | 178 | 0 |
| 1989 | 225 | 0 |
| 1990 | 202 | 0 |
| 1991 | 197 | 0 |
| 1992 | 212 | 0 |
| 1993 | 280 | 0 |
| 1994 | 190 | 0 |
| 1995 | 162 | 0 |
| 1996 | 144 | 0 |
| 1997 | 153 | 0 |
| 1998 | 234 | 0 |
| 1999 | 205 | 0 |
| 2000 | 201 | 0 |
| 2001 | 213 | 56 |
| 2002 | 281 | 221 |
| 2003 | 217 | 277 |
| 2004 | 195 | 312 |
| 2005 | 149 | 314 |
| 2006 | 224 | 283 |
| 2007 | 189 | 265 |
| 2008 | 212 | 261 |
| 2009 | 191 | 279 |
| 2010 | 169 | 288 |
| 2011 | 204 | 296 |
| 2012 | 206 | 313 |
| 2013 | 252 | 422 |
| 2014 | 342 | 358 |
| 2015 | 367 | 381 |
| 2016 | 362 | 397 |
| 2017 | 298 | 313 |
| 2018 | 288 | 288 |
| 2019 | 262 | 278 |
| 2020 | 269 | 243 |
| 2021 | 204 | 246 |
| 2022 | 146 | 244 |
| 2023 | 128 | 259 |
| 2024 | 145 | 279 |
| 2025 | 118 | 209 |
| 2026 | 114 | 156 |
By publication year. Applications have been published since 2001. 2026 runs to 8 Oct.
Subgroups
Granted patents
- C07C 51/16Preparation of carboxylic acids or their salts, halides or anhydrides: by oxidation3,269
- C07C 51/42Separation2,763
- C07C 51/347Preparation of carboxylic acids or their salts, halides or anhydrides: by reactions2,086
- C07C 51/41Preparation of salts of carboxylic acids1,116
- C07C 51/10Preparation of carboxylic acids or their salts, halides or anhydrides: by reaction972
- C07C 51/09From carboxylic acid esters or lactones921
- C07C 51/58Preparation of carboxylic acid halides614
- C07C 51/54Preparation of carboxylic acid anhydrides583
All 17 subgroupsShow fewer
- C07C 51/15Preparation of carboxylic acids or their salts, halides or anhydrides: by reaction265
- C07C 51/02From salts of carboxylic acids255
- C07C 51/08From nitriles229
- C07C 51/06From carboxylic acid amides100
- C07C 51/34Preparation of carboxylic acids or their salts, halides or anhydrides: by oxidation80
- C07C 51/083From carboxylic acid anhydrides73
- C07C 51/04From carboxylic acid halides41
- C07C 51/093Preparation of carboxylic acids or their salts, halides or anhydrides: by hydrolysis30
- C07C 51/097From or via nitro-substituted organic compounds6
Recent patents
- Catalytic and continuous thermochemical process of production of valuable derivatives from organic materials and/or waste6 Oct 2026US 12,753,141 B2Instituto Superior Tecnico
- Process for the preparation of (9S)-2-bromo-9-(2,3,4-trifluorophenyl)-6,7,8,9-tetrahydro-5H-[1,2,4]triazolo[1,5-A]azepine6 Oct 2026US 12,753,175 B2Hoffmann-La Roche Inc.
- Hydrogenation catalysts and method for benzoic acid hydrogenation reaction29 Sep 2026US 12,746,534 B2Hunan Changlian New Material Technology Co., Ltd.
- Method for preparing acetic acid by catalyst22 Sep 2026US 12,741,922 B2Taiyuan University of Technology
- Purification device22 Sep 2026US 12,741,924 B2Nippon Shokubai Co., Ltd.
- Storage and/or transport of ethylenically unsaturated carboxylic acids8 Oct 2026US 2026/0308099 A1BASF SE
- Continuous deoxyfluorination with sf41 Oct 2026US 2026/0296993 A1Lonza Ltd.
- Processes for the production of lactic acid with concurrent recovery and reuse of by-products thereof1 Oct 2026US 2026/0297009 A1
- Process for the production of caboxylic acids and carbonyl compounds by utilizing carbon dioxide-rich feedstock1 Oct 2026US 2026/0297010 A1
- Methods for production of butyric acid1 Oct 2026US 2026/0297011 A1
Most cited
By later US patents
- Methods for recovering acrylic acid353US 6,252,110 B1Nippon Shokubai Co., Ltd. · 2001
- Methanol carbonylation process273US 5,144,068 AHoechst Celanese Corporation · 1992
- Formation, purification and recovery of phthalic anhydride253US 4,215,051 AStandard Oil Company (Indiana) · 1980
- Methanol carbonylation process252US 5,001,259 AHoechst Celanese Corporation · 1991
- Low energy carbonylation process242US 6,657,078 B2Celanese International Corporation · 2003