C23F 11/163
Sulfonic acids
Official title: {Sulfonic acids}
C23F11/163 (Sulfonic acids) appears on 43 US grants and 37 published applications in this corpus.
Search patents in C23F- Granted patents
- 43
- Published applications
- 37
- Assignees
- 37
- Inventors
- 118
- Latest grant
- 9 Jun 2026
Filings by year
| Year | Granted patents | Published applications |
|---|---|---|
| 1976 | 2 | 0 |
| 1977 | 1 | 0 |
| 1978 | 2 | 0 |
| 1979 | 0 | 0 |
| 1980 | 0 | 0 |
| 1981 | 2 | 0 |
| 1982 | 0 | 0 |
| 1983 | 0 | 0 |
| 1984 | 0 | 0 |
| 1985 | 0 | 0 |
| 1986 | 1 | 0 |
| 1987 | 0 | 0 |
| 1988 | 0 | 0 |
| 1989 | 1 | 0 |
| 1990 | 0 | 0 |
| 1991 | 0 | 0 |
| 1992 | 0 | 0 |
| 1993 | 1 | 0 |
| 1994 | 1 | 0 |
| 1995 | 1 | 0 |
| 1996 | 3 | 0 |
| 1997 | 1 | 0 |
| 1998 | 1 | 0 |
| 1999 | 0 | 0 |
| 2000 | 0 | 0 |
| 2001 | 0 | 0 |
| 2002 | 0 | 0 |
| 2003 | 1 | 0 |
| 2004 | 0 | 1 |
| 2005 | 0 | 0 |
| 2006 | 1 | 0 |
| 2007 | 0 | 2 |
| 2008 | 0 | 0 |
| 2009 | 0 | 0 |
| 2010 | 2 | 1 |
| 2011 | 0 | 1 |
| 2012 | 0 | 1 |
| 2013 | 0 | 1 |
| 2014 | 1 | 2 |
| 2015 | 2 | 2 |
| 2016 | 0 | 1 |
| 2017 | 1 | 3 |
| 2018 | 1 | 2 |
| 2019 | 2 | 1 |
| 2020 | 4 | 6 |
| 2021 | 4 | 2 |
| 2022 | 1 | 2 |
| 2023 | 1 | 1 |
| 2024 | 3 | 3 |
| 2025 | 1 | 2 |
| 2026 | 1 | 3 |
By publication year. Applications have been published since 2001. 2026 runs to 8 Oct.
Recent patents
- Methods and compositions to reduce azoles and AOX corrosion inhibitors9 Jun 2026US 12,649,675 B2Bl Technologies, Inc.
- Method for preventing the formation of white rust on a zinc-coated steel surface21 Jan 2025US 12,203,175 B2Suez Groupe
- Method of suspending elemental sulfur in water11 Jun 2024US 12,006,240 B2Solenis Technologies, L.P.
- Ionic liquid corrosion inhibitors21 May 2024US 11,987,746 B2Halliburton Energy Services.Inc.
- Plant composite corrosion inhibitor for oil field and preparation method thereof26 Mar 2024US 11,939,681 B1Southwest Petroleum University
- Traced corrosion inhibitor for closed loop systems9 Jul 2026US 2026/0193510 A1Chemtreat, Inc.
- Stray current corrosion inhibitor28 May 2026US 2026/0146335 A1ChampionX LLC
- Aluminum corrosion inhibitors for closed loop systems16 Apr 2026US 2026/0103806 A1Chemtreat, Inc.
- Composition for protecting copper surface, and method for producing semiconductor intermediate and semiconductor using same26 Jun 2025US 2025/0207265 A1Mitsubishi Gas Chemical Company, Inc.
- Amino acid derivatives and sulfur derivatives as biodegradable corrosion inhibitors12 Jun 2025US 2025/0188618 A1ChampionX LLC
Most cited
By later US patents
- Method for deoxygenation of water48US 4,278,635 AChemed Corporation · 1981
- Method of making corrosion-protected coaxial cable37US 6,997,999 B2CommScope Properties, LLC · 2006
- Corrosion-protected coaxial cable, method of making same and corrosion-inhibiting composition30US 6,596,393 B1CommScope Properties, LLC · 2003
- Corrosion inhibitors24US 5,183,590 AW. R. Grace & Co.-Conn. · 1993
- Control of corrosion in aqueous systems15US 4,847,001 AW. R. Grace & Co.-Conn. · 1989