C10L 1/2437
Sulfonic acids
Official title: {Sulfonic acids; Derivatives thereof, e.g. sulfonamides, sulfosuccinic acid esters}
C10L1/2437 (Sulfonic acids) appears on 311 US grants and 218 published applications in this corpus.
Search patents in C10L- Granted patents
- 311
- Published applications
- 218
- Assignees
- 133
- Inventors
- 635
- Latest grant
- 11 Aug 2026
Filings by year
| Year | Granted patents | Published applications |
|---|---|---|
| 1976 | 2 | 0 |
| 1977 | 3 | 0 |
| 1978 | 10 | 0 |
| 1979 | 3 | 0 |
| 1980 | 7 | 0 |
| 1981 | 7 | 0 |
| 1982 | 4 | 0 |
| 1983 | 5 | 0 |
| 1984 | 2 | 0 |
| 1985 | 4 | 0 |
| 1986 | 9 | 0 |
| 1987 | 6 | 0 |
| 1988 | 3 | 0 |
| 1989 | 4 | 0 |
| 1990 | 2 | 0 |
| 1991 | 2 | 0 |
| 1992 | 9 | 0 |
| 1993 | 7 | 0 |
| 1994 | 9 | 0 |
| 1995 | 11 | 0 |
| 1996 | 15 | 0 |
| 1997 | 12 | 0 |
| 1998 | 19 | 0 |
| 1999 | 10 | 0 |
| 2000 | 12 | 0 |
| 2001 | 11 | 2 |
| 2002 | 4 | 3 |
| 2003 | 9 | 16 |
| 2004 | 3 | 25 |
| 2005 | 3 | 17 |
| 2006 | 3 | 10 |
| 2007 | 4 | 7 |
| 2008 | 4 | 17 |
| 2009 | 7 | 8 |
| 2010 | 8 | 18 |
| 2011 | 7 | 8 |
| 2012 | 5 | 8 |
| 2013 | 9 | 14 |
| 2014 | 10 | 11 |
| 2015 | 4 | 7 |
| 2016 | 6 | 4 |
| 2017 | 7 | 7 |
| 2018 | 3 | 3 |
| 2019 | 2 | 3 |
| 2020 | 5 | 8 |
| 2021 | 5 | 6 |
| 2022 | 4 | 0 |
| 2023 | 3 | 3 |
| 2024 | 2 | 7 |
| 2025 | 1 | 4 |
| 2026 | 5 | 2 |
By publication year. Applications have been published since 2001. 2026 runs to 8 Oct.
Recent patents
- Ammonia-hydrocarbon fuel compositions, method of use, and systems thereof11 Aug 2026US 12,703,830 B2Mighty Pipeline, Inc.
- Aqueous dispersions of paraffin inhibitors16 Jun 2026US 12,655,363 B2BASF SE
- High-concentration filling slurry of coal gangue and preparation method thereof9 Jun 2026US 12,649,887 B1Taiyuan University of Science and Technology
- Process for reduction of asphaltenes from marine fuels17 Mar 2026US 12,577,485 B2BASF SE
- Aqueous emulsifier package with anionic surfactant for fuel emulsion27 Jan 2026US 12,534,678 B2BASF SE
- Aqueous dispersions of paraffin inhibitors17 Sep 2026US 2026/0275218 A1BASF SE
- High-concentration filling slurry of coal gangue and preparation method thereof11 Jun 2026US 2026/0159773 A1Taiyuan University of Science and Technology
- Polyisobutyl benzene sulfonate for lubricants and fuels27 Nov 2025US 2025/0361336 A1BASF SE
- Ammonia-hydrocarbon fuel compositions, method of use, and systems thereof20 Nov 2025US 2025/0354077 A1Mighty Pipeline, Inc.
- Oligobutyl benzene sulfonate for lubricants and fuels10 Jul 2025US 2025/0223258 A1BASF SE
Most cited
By later US patents
- Combination of ethylene polymer, polymer having alkyl side chains, and nitrogen containing compound to improve cold flow properties of distillate fuel oils135US 4,211,534 AExxon Research & Engineering Co. · 1980
- Method for tagging petroleum products91US 5,525,516 AEastman Chemical Company · 1996
- Fuel composition containing quaternary ammonium salts of succinimides88US 4,171,959 ATexaco Inc. · 1979
- Ethylene .alpha.-olefin block copolymers and methods for production thereof83US 5,733,980 AExxon Chemical Patents Inc. · 1998
- Demulsifier additive compositions for lubricants and fuels and concentrates containing the same62US 4,129,508 AThe Lubrizol Corporation · 1978