C07C 309/72
Having sulfur atoms of esterified sulfo groups bound to carbon atoms of
Official title: having sulfur atoms of esterified sulfo groups bound to carbon atoms of six-membered aromatic rings of a carbon skeleton
C07C309/72 (Having sulfur atoms of esterified sulfo groups bound to carbon atoms of) appears on 514 US grants and 382 published applications in this corpus.
Search patents in C07C- Granted patents
- 514
- Published applications
- 382
- Assignees
- 331
- Inventors
- 1,542
- Latest grant
- 25 Aug 2026
Filings by year
| Year | Granted patents | Published applications |
|---|---|---|
| 1976 | 10 | 0 |
| 1977 | 5 | 0 |
| 1978 | 4 | 0 |
| 1979 | 7 | 0 |
| 1980 | 6 | 0 |
| 1981 | 10 | 0 |
| 1982 | 6 | 0 |
| 1983 | 6 | 0 |
| 1984 | 3 | 0 |
| 1985 | 3 | 0 |
| 1986 | 0 | 0 |
| 1987 | 1 | 0 |
| 1988 | 1 | 0 |
| 1989 | 1 | 0 |
| 1990 | 7 | 0 |
| 1991 | 7 | 0 |
| 1992 | 12 | 0 |
| 1993 | 21 | 0 |
| 1994 | 15 | 0 |
| 1995 | 16 | 0 |
| 1996 | 22 | 0 |
| 1997 | 19 | 0 |
| 1998 | 13 | 0 |
| 1999 | 10 | 0 |
| 2000 | 13 | 0 |
| 2001 | 20 | 8 |
| 2002 | 13 | 6 |
| 2003 | 15 | 17 |
| 2004 | 12 | 18 |
| 2005 | 9 | 15 |
| 2006 | 9 | 12 |
| 2007 | 12 | 16 |
| 2008 | 3 | 15 |
| 2009 | 10 | 16 |
| 2010 | 9 | 23 |
| 2011 | 13 | 22 |
| 2012 | 15 | 17 |
| 2013 | 19 | 19 |
| 2014 | 13 | 23 |
| 2015 | 17 | 12 |
| 2016 | 23 | 20 |
| 2017 | 12 | 12 |
| 2018 | 11 | 13 |
| 2019 | 14 | 15 |
| 2020 | 9 | 14 |
| 2021 | 10 | 14 |
| 2022 | 5 | 8 |
| 2023 | 8 | 12 |
| 2024 | 8 | 10 |
| 2025 | 3 | 15 |
| 2026 | 4 | 10 |
By publication year. Applications have been published since 2001. 2026 runs to 8 Oct.
Subgroups
Granted patents
- C07C 309/73To carbon atoms of non-condensed six-membered aromatic rings387
- C07C 309/75Containing singly-bound oxygen atoms bound to the carbon skeleton77
- C07C 309/76Containing nitrogen atoms, not being part of nitro or nitroso groups, bound68
- C07C 309/77Containing carboxyl groups bound to the carbon skeleton48
- C07C 309/74To carbon atoms of six-membered aromatic rings being part of condensed ring16
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Most cited
By later US patents
- Oxime sulfonates and the use thereof as latent sulfonic acids100US 6,004,724 ACiba Specialty Chemicals Corporation · 1999
- GABA and L-glutamic acid analogs for antiseizure treatment88US 5,563,175 ANorthwestern University · 1996
- Benzimidazole derivatives62US 5,314,880 ABritish Bio-Technology Limited · 1994
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