C07C 309/64
Having sulfur atoms of esterified sulfo groups bound to acyclic carbon atoms
Official title: having sulfur atoms of esterified sulfo groups bound to acyclic carbon atoms
C07C309/64 (Having sulfur atoms of esterified sulfo groups bound to acyclic carbon atoms) appears on 747 US grants and 600 published applications in this corpus.
Search patents in C07C- Granted patents
- 747
- Published applications
- 600
- Assignees
- 411
- Inventors
- 2,159
- Latest grant
- 25 Aug 2026
Filings by year
| Year | Granted patents | Published applications |
|---|---|---|
| 1976 | 13 | 0 |
| 1977 | 8 | 0 |
| 1978 | 11 | 0 |
| 1979 | 6 | 0 |
| 1980 | 7 | 0 |
| 1981 | 8 | 0 |
| 1982 | 4 | 0 |
| 1983 | 6 | 0 |
| 1984 | 6 | 0 |
| 1985 | 3 | 0 |
| 1986 | 2 | 0 |
| 1987 | 3 | 0 |
| 1988 | 2 | 0 |
| 1989 | 7 | 0 |
| 1990 | 8 | 0 |
| 1991 | 10 | 0 |
| 1992 | 11 | 0 |
| 1993 | 17 | 0 |
| 1994 | 20 | 0 |
| 1995 | 24 | 0 |
| 1996 | 24 | 0 |
| 1997 | 28 | 0 |
| 1998 | 23 | 0 |
| 1999 | 12 | 0 |
| 2000 | 10 | 0 |
| 2001 | 17 | 6 |
| 2002 | 22 | 16 |
| 2003 | 23 | 24 |
| 2004 | 17 | 26 |
| 2005 | 10 | 21 |
| 2006 | 15 | 25 |
| 2007 | 14 | 29 |
| 2008 | 12 | 17 |
| 2009 | 16 | 32 |
| 2010 | 21 | 37 |
| 2011 | 12 | 35 |
| 2012 | 18 | 26 |
| 2013 | 30 | 26 |
| 2014 | 23 | 35 |
| 2015 | 31 | 29 |
| 2016 | 39 | 38 |
| 2017 | 28 | 28 |
| 2018 | 28 | 27 |
| 2019 | 21 | 17 |
| 2020 | 14 | 21 |
| 2021 | 15 | 15 |
| 2022 | 5 | 15 |
| 2023 | 13 | 21 |
| 2024 | 8 | 11 |
| 2025 | 12 | 9 |
| 2026 | 10 | 14 |
By publication year. Applications have been published since 2001. 2026 runs to 8 Oct.
Subgroups
Granted patents
- C07C 309/65Of a saturated carbon skeleton639
- C07C 309/67Of an unsaturated carbon skeleton51
- C07C 309/69Of a carbon skeleton substituted by nitrogen atoms, not being part of41
- C07C 309/68Of a carbon skeleton substituted by singly-bound oxygen atoms38
- C07C 309/70Of a carbon skeleton substituted by carboxyl groups16
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Most cited
By later US patents
- Poly(perfluoroalkylene oxide) derivatives106US 4,085,137 AMinnesota Mining and Manufacturing Company · 1978
- Poly(perfluoroalkylene oxide) derivatives104US 4,094,911 AMinnesota Mining and Manufacturing Company · 1978
- Oxime sulfonates and the use thereof as latent sulfonic acids100US 6,004,724 ACiba Specialty Chemicals Corporation · 1999
- Oxime derivatives and the use thereof as latent acids99US 6,261,738 B1Ciba Specialty Chemicals Corporation · 2001
- Acetylenes disubstituted with a 5-amino or substituted 5-amino substituted tetrahydronaphthyl group and with an aryl or heteroaryl group having retinoid-like biological activity80US 5,489,584 AAllergan, Inc. · 1996