C07C 51/412
By conversion of the acids, their salts, esters or anhydrides with the
Official title: {by conversion of the acids, their salts, esters or anhydrides with the same carboxylic acid part}
C07C51/412 (By conversion of the acids, their salts, esters or anhydrides with the) appears on 854 US grants and 776 published applications in this corpus.
Search patents in C07C- Granted patents
- 854
- Published applications
- 776
- Assignees
- 580
- Inventors
- 2,209
- Latest grant
- 6 Oct 2026
Filings by year
| Year | Granted patents | Published applications |
|---|---|---|
| 1976 | 14 | 0 |
| 1977 | 18 | 0 |
| 1978 | 17 | 0 |
| 1979 | 7 | 0 |
| 1980 | 13 | 0 |
| 1981 | 12 | 0 |
| 1982 | 11 | 0 |
| 1983 | 8 | 0 |
| 1984 | 18 | 0 |
| 1985 | 9 | 0 |
| 1986 | 3 | 0 |
| 1987 | 9 | 0 |
| 1988 | 8 | 0 |
| 1989 | 8 | 0 |
| 1990 | 5 | 0 |
| 1991 | 8 | 0 |
| 1992 | 6 | 0 |
| 1993 | 21 | 0 |
| 1994 | 5 | 0 |
| 1995 | 11 | 0 |
| 1996 | 12 | 0 |
| 1997 | 9 | 0 |
| 1998 | 16 | 0 |
| 1999 | 13 | 0 |
| 2000 | 15 | 0 |
| 2001 | 18 | 3 |
| 2002 | 32 | 19 |
| 2003 | 18 | 24 |
| 2004 | 14 | 23 |
| 2005 | 9 | 35 |
| 2006 | 17 | 15 |
| 2007 | 17 | 23 |
| 2008 | 25 | 35 |
| 2009 | 17 | 28 |
| 2010 | 15 | 33 |
| 2011 | 15 | 39 |
| 2012 | 25 | 35 |
| 2013 | 29 | 58 |
| 2014 | 43 | 37 |
| 2015 | 38 | 41 |
| 2016 | 32 | 50 |
| 2017 | 37 | 44 |
| 2018 | 34 | 31 |
| 2019 | 29 | 24 |
| 2020 | 19 | 21 |
| 2021 | 16 | 28 |
| 2022 | 18 | 31 |
| 2023 | 17 | 32 |
| 2024 | 19 | 32 |
| 2025 | 14 | 26 |
| 2026 | 11 | 9 |
By publication year. Applications have been published since 2001. 2026 runs to 8 Oct.
Recent patents
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Most cited
By later US patents
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- 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