C07C 303/38
By reaction of ammonia or amines with sulfonic acids, or with esters
Official title: by reaction of ammonia or amines with sulfonic acids, or with esters, anhydrides, or halides thereof
C07C303/38 (By reaction of ammonia or amines with sulfonic acids, or with esters) appears on 110 US grants and 112 published applications in this corpus.
Search patents in C07C- Granted patents
- 110
- Published applications
- 112
- Assignees
- 97
- Inventors
- 345
- Latest grant
- 24 Sep 2024
Filings by year
| Year | Granted patents | Published applications |
|---|---|---|
| 1985 | 1 | 0 |
| 1986 | 0 | 0 |
| 1987 | 0 | 0 |
| 1988 | 0 | 0 |
| 1989 | 1 | 0 |
| 1990 | 1 | 0 |
| 1991 | 3 | 0 |
| 1992 | 1 | 0 |
| 1993 | 2 | 0 |
| 1994 | 0 | 0 |
| 1995 | 2 | 0 |
| 1996 | 2 | 0 |
| 1997 | 1 | 0 |
| 1998 | 4 | 0 |
| 1999 | 2 | 0 |
| 2000 | 3 | 0 |
| 2001 | 4 | 4 |
| 2002 | 6 | 5 |
| 2003 | 4 | 6 |
| 2004 | 3 | 2 |
| 2005 | 5 | 8 |
| 2006 | 2 | 3 |
| 2007 | 5 | 6 |
| 2008 | 1 | 7 |
| 2009 | 7 | 7 |
| 2010 | 4 | 4 |
| 2011 | 4 | 6 |
| 2012 | 4 | 4 |
| 2013 | 3 | 4 |
| 2014 | 5 | 3 |
| 2015 | 1 | 5 |
| 2016 | 4 | 3 |
| 2017 | 3 | 7 |
| 2018 | 3 | 6 |
| 2019 | 8 | 7 |
| 2020 | 5 | 3 |
| 2021 | 0 | 3 |
| 2022 | 3 | 2 |
| 2023 | 1 | 3 |
| 2024 | 2 | 2 |
| 2025 | 0 | 0 |
| 2026 | 0 | 2 |
By publication year. Applications have been published since 2001. 2026 runs to 8 Oct.
Recent patents
- Compound used as SIRT6 small-molecule allosteric activator and pharmaceutical composition thereof24 Sep 2024US 12,098,119 B2Nutshell BioTech (Shanghai) Co., Ltd.
- Process and intermediates for the preparation of certain nematicidal sulfonamides13 Feb 2024US 11,897,854 B2Corteva Agriscience LLC
- Processes for producing high-purity N,N-dialkyl perfluoroalkylsulfonamide20 Jun 2023US 11,680,041 B1SES Holdings Pte. Ltd.
- Heat sensitive recording material, and color developer29 Nov 2022US 11,512,048 B2Solenis Technologies, L.P.
- HPTS series derivatives and synthesis method therefor18 Oct 2022US 11,472,768 B2Nanjing University
- Process for the preparation of sulfamoylbenzoic acid derivatives1 Oct 2026US 2026/0297022 A1Iama Therapeutics S.R.L.
- Novel naphthyl and isoquinoline sulfonamide derivatives29 Jan 2026US 2026/0027104 A1Hoffmann-La Roche Inc.
- Process and intermediates for the preparation of certain nematicidal sulfonamides25 Apr 2024US 2024/0132459 A1Corteva Agriscience LLC
- Therapeutic compounds, formulations, and use thereof1 Feb 2024US 2024/0033234 A1Tvardi Therapeutics, Inc.
- Processes For Producing High-Purity N,N-Dialkyl Perfluoroalkylsulfonamide8 Jun 2023US 2023/0174469 A1SES Holdings Pte. Ltd.
Most cited
By later US patents
- Copper-catalyzed formation of carbon-heteroatom and carbon-carbon bonds78US 6,759,554 B2Massachusetts Institute of Technology · 2004
- Copper-catalyzed formation of carbon-heteroatom and carbon-carbon bonds72US 6,867,298 B2Massachusetts Institute of Technology · 2005
- Perfluoroalkylsulfonates, sulfonimides, and sulfonyl methides, and electrolytes containing them69US 5,514,493 AMinnesota Mining and Manufacturing Company · 1996
- Preparation of bis (fluoroalkylenesulfonyl) imides and (fluoroalkysulfony) (fluorosulfonyl) imides62US 5,874,616 AMinnesota Mining and Manufacturing Company · 1999
- Copper-catalyzed formation of carbon-heteroatom and carbon-carbon bonds62US 7,115,784 B2Massachusetts Institute of Technology · 2006