C07C 51/41
Preparation of salts of carboxylic acids
Official title: Preparation of salts of carboxylic acids ({C07C51/093 - C07C51/34 take precedence} preparation of soap C11D)
C07C51/41 (Preparation of salts of carboxylic acids) appears on 1,116 US grants and 1,044 published applications in this corpus.
Search patents in C07C- Granted patents
- 1,116
- Published applications
- 1,044
- Assignees
- 763
- Inventors
- 3,078
- Latest grant
- 6 Oct 2026
Filings by year
| Year | Granted patents | Published applications |
|---|---|---|
| 1976 | 18 | 0 |
| 1977 | 19 | 0 |
| 1978 | 19 | 0 |
| 1979 | 13 | 0 |
| 1980 | 16 | 0 |
| 1981 | 15 | 0 |
| 1982 | 12 | 0 |
| 1983 | 11 | 0 |
| 1984 | 24 | 0 |
| 1985 | 17 | 0 |
| 1986 | 5 | 0 |
| 1987 | 15 | 0 |
| 1988 | 11 | 0 |
| 1989 | 15 | 0 |
| 1990 | 10 | 0 |
| 1991 | 10 | 0 |
| 1992 | 10 | 0 |
| 1993 | 24 | 0 |
| 1994 | 9 | 0 |
| 1995 | 11 | 0 |
| 1996 | 15 | 0 |
| 1997 | 13 | 0 |
| 1998 | 18 | 0 |
| 1999 | 16 | 0 |
| 2000 | 16 | 0 |
| 2001 | 20 | 3 |
| 2002 | 36 | 22 |
| 2003 | 21 | 30 |
| 2004 | 16 | 30 |
| 2005 | 11 | 35 |
| 2006 | 19 | 18 |
| 2007 | 19 | 26 |
| 2008 | 25 | 39 |
| 2009 | 20 | 43 |
| 2010 | 20 | 44 |
| 2011 | 18 | 46 |
| 2012 | 28 | 39 |
| 2013 | 39 | 77 |
| 2014 | 54 | 46 |
| 2015 | 52 | 59 |
| 2016 | 44 | 71 |
| 2017 | 49 | 57 |
| 2018 | 45 | 47 |
| 2019 | 39 | 43 |
| 2020 | 38 | 35 |
| 2021 | 31 | 44 |
| 2022 | 27 | 43 |
| 2023 | 22 | 52 |
| 2024 | 25 | 41 |
| 2025 | 18 | 36 |
| 2026 | 18 | 18 |
By publication year. Applications have been published since 2001. 2026 runs to 8 Oct.
Subgroups
Granted patents
- C07C 51/412By conversion of the acids, their salts, esters or anhydrides with the854
- C07C 51/418Preparation of metal complexes containing carboxylic acid moieties117
- C07C 51/414Preparation of superbasic salts37
- C07C 51/416Henkel reaction and related reactions, i.e. rearrangement of carboxylate salt groups linked22
Recent patents
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- Manufacturing process of metal-organic framework porous material of aluminium and terephthalic acid20 Aug 2026US 2026/0242323 A1Chiang Mai University
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- Composite of acid and salt, and preparation method therefor2 Jul 2026US 2026/0184662 A1Nanjing Nutrabuilding Bio-Tech Co., Ltd.
Most cited
By later US patents
- Compounds and methods for delivery of prostacyclin analogs122US 7,417,070 B2United Therapeutics Corporation · 2008
- Compounds and methods for delivery of prostacyclin analogs111US 7,384,978 B2United Therapeutics Corporation · 2008
- Method of preparing an alkaline earth metal tallate100US 5,763,373 AHigh Point Chemical Corp. · 1998
- Crystalline forms of a purine derivative99US 8,889,861 B2Cyclacel Limited · 2014
- Permeability modifying composition for use in oil recovery96US 5,654,261 ATiorco, Inc. · 1997