C07C 231/00
Preparation of carboxylic acid amides
C07C231/00 (Preparation of carboxylic acid amides) appears on 2,770 US grants and 2,614 published applications in this corpus.
Search patents in C07C- Granted patents
- 2,770
- Published applications
- 2,614
- Assignees
- 1,398
- Inventors
- 7,649
- Latest grant
- 6 Oct 2026
Filings by year
| Year | Granted patents | Published applications |
|---|---|---|
| 1976 | 16 | 0 |
| 1977 | 10 | 0 |
| 1978 | 9 | 0 |
| 1979 | 7 | 0 |
| 1980 | 17 | 0 |
| 1981 | 28 | 0 |
| 1982 | 13 | 0 |
| 1983 | 9 | 0 |
| 1984 | 6 | 0 |
| 1985 | 16 | 0 |
| 1986 | 12 | 0 |
| 1987 | 8 | 0 |
| 1988 | 8 | 0 |
| 1989 | 13 | 0 |
| 1990 | 34 | 0 |
| 1991 | 43 | 0 |
| 1992 | 41 | 0 |
| 1993 | 43 | 0 |
| 1994 | 54 | 0 |
| 1995 | 57 | 0 |
| 1996 | 47 | 0 |
| 1997 | 66 | 0 |
| 1998 | 77 | 0 |
| 1999 | 77 | 0 |
| 2000 | 61 | 0 |
| 2001 | 52 | 15 |
| 2002 | 71 | 57 |
| 2003 | 63 | 80 |
| 2004 | 51 | 85 |
| 2005 | 51 | 76 |
| 2006 | 47 | 71 |
| 2007 | 55 | 85 |
| 2008 | 34 | 68 |
| 2009 | 47 | 124 |
| 2010 | 59 | 117 |
| 2011 | 57 | 147 |
| 2012 | 94 | 119 |
| 2013 | 111 | 172 |
| 2014 | 140 | 152 |
| 2015 | 152 | 141 |
| 2016 | 149 | 143 |
| 2017 | 100 | 112 |
| 2018 | 88 | 122 |
| 2019 | 113 | 107 |
| 2020 | 112 | 111 |
| 2021 | 85 | 98 |
| 2022 | 66 | 105 |
| 2023 | 49 | 96 |
| 2024 | 65 | 75 |
| 2025 | 49 | 77 |
| 2026 | 38 | 59 |
By publication year. Applications have been published since 2001. 2026 runs to 8 Oct.
Subgroups
Granted patents
- C07C 231/12Preparation of carboxylic acid amides: by reactions not involving the formation of1,002
- C07C 231/02From carboxylic acids or from esters, anhydrides, or halides thereof by reaction933
- C07C 231/22Separation306
- C07C 231/16Preparation of optical isomers274
- C07C 231/10From compounds not provided for in groups c07c231/02 - c07c231/08250
- C07C 231/14Preparation of carboxylic acid amides: by formation of carboxamide groups together with235
- C07C 231/06From nitriles by transformation of cyano groups into carboxamide groups166
- C07C 231/08From amides by reaction at nitrogen atoms of carboxamide groups124
All 9 subgroupsShow fewer
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Most cited
By later US patents
- Generation of combinatorial libraries199US 5,449,754 AH & N Instruments, Inc. · 1995
- Ligands for metals and improved metal-catalyzed processes based thereon143US 6,307,087 B1Massachusetts Institute of Technology · 2001
- Synthesis of tyrosine derived diphenol monomers141US 5,587,507 ARutgers, The State University · 1996
- Furyl or thienyl carbonyl substituted taxanes and pharmaceutical compositions containing them106US 5,283,253 AFlorida State University · 1994
- Ligands for metals and improved metal-catalyzed processes based thereon100US 6,395,916 B1Massachusetts Institute of Technology · 2002