C07C 309/63
Esters of sulfonic acids
C07C309/63 (Esters of sulfonic acids) appears on 1,097 US grants and 847 published applications in this corpus.
Search patents in C07C- Granted patents
- 1,097
- Published applications
- 847
- Assignees
- 592
- Inventors
- 3,078
- Latest grant
- 25 Aug 2026
Filings by year
| Year | Granted patents | Published applications |
|---|---|---|
| 1976 | 21 | 0 |
| 1977 | 16 | 0 |
| 1978 | 15 | 0 |
| 1979 | 12 | 0 |
| 1980 | 12 | 0 |
| 1981 | 17 | 0 |
| 1982 | 10 | 0 |
| 1983 | 8 | 0 |
| 1984 | 7 | 0 |
| 1985 | 6 | 0 |
| 1986 | 2 | 0 |
| 1987 | 4 | 0 |
| 1988 | 3 | 0 |
| 1989 | 7 | 0 |
| 1990 | 12 | 0 |
| 1991 | 14 | 0 |
| 1992 | 18 | 0 |
| 1993 | 33 | 0 |
| 1994 | 30 | 0 |
| 1995 | 35 | 0 |
| 1996 | 39 | 0 |
| 1997 | 41 | 0 |
| 1998 | 32 | 0 |
| 1999 | 18 | 0 |
| 2000 | 20 | 0 |
| 2001 | 33 | 12 |
| 2002 | 31 | 21 |
| 2003 | 32 | 35 |
| 2004 | 26 | 37 |
| 2005 | 17 | 31 |
| 2006 | 20 | 31 |
| 2007 | 20 | 40 |
| 2008 | 13 | 25 |
| 2009 | 24 | 45 |
| 2010 | 26 | 51 |
| 2011 | 22 | 47 |
| 2012 | 28 | 41 |
| 2013 | 41 | 39 |
| 2014 | 33 | 49 |
| 2015 | 42 | 36 |
| 2016 | 52 | 48 |
| 2017 | 32 | 34 |
| 2018 | 33 | 33 |
| 2019 | 30 | 28 |
| 2020 | 22 | 32 |
| 2021 | 21 | 27 |
| 2022 | 11 | 19 |
| 2023 | 17 | 28 |
| 2024 | 15 | 18 |
| 2025 | 13 | 19 |
| 2026 | 11 | 21 |
By publication year. Applications have been published since 2001. 2026 runs to 8 Oct.
Subgroups
Granted patents
Recent patents
- Light emitting element and manufacturing method thereof25 Aug 2026US 12,716,025 B2Samsung Display Co., Ltd.
- TES-based cationic lipids16 Jun 2026US 12,655,095 B2Translate Bio, Inc.
- Arylamides and methods of use thereof26 May 2026US 12,637,414 B2Genzyme Corporation
- Method for producing naphthylsilole, naphthylsilole containing heterocyclic group, and graphene nanoribbon containing heterocyclic group26 May 2026US 12,637,475 B2National University Corporation Tokai National Higher Education and Research System
- Light emitting element and manufacturing method thereof5 May 2026US 12,618,005 B2Samsung Display Co., Ltd.
- Improving the mechanical integrity of polysulfonic acids1 Oct 2026US 2026/0297234 A1
- Unsaturated ether fragrance precursors20 Aug 2026US 2026/0242692 A1Givaudan SA
- Compound, polymerizable composition, cured product, optical film, polarizing plate, and image display device20 Aug 2026US 2026/0243940 A1FUJIFILM Corporation
- Non-ionic photoacid generators, photoresist compositions, and pattern formation methods20 Aug 2026US 2026/0244097 A1
- Sulfonium salt monomer, polymer, chemically amplified resist composition, and pattern forming method30 Jul 2026US 2026/0219570 A1Shin-Etsu Chemical Co., Ltd.
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
- GABA and L-glutamic acid analogs for antiseizure treatment88US 5,563,175 ANorthwestern University · 1996