C09K 23/12
Sulfonates of aromatic or alkylated aromatic compounds
C09K23/12 (Sulfonates of aromatic or alkylated aromatic compounds) appears on 91 US grants and 28 published applications in this corpus.
Search patents in C09K- Granted patents
- 91
- Published applications
- 28
- Assignees
- 61
- Inventors
- 210
- Latest grant
- 25 Nov 2025
Filings by year
| Year | Granted patents | Published applications |
|---|---|---|
| 1976 | 3 | 0 |
| 1977 | 0 | 0 |
| 1978 | 3 | 0 |
| 1979 | 2 | 0 |
| 1980 | 7 | 0 |
| 1981 | 5 | 0 |
| 1982 | 5 | 0 |
| 1983 | 4 | 0 |
| 1984 | 11 | 0 |
| 1985 | 2 | 0 |
| 1986 | 2 | 0 |
| 1987 | 1 | 0 |
| 1988 | 3 | 0 |
| 1989 | 2 | 0 |
| 1990 | 9 | 0 |
| 1991 | 1 | 0 |
| 1992 | 2 | 0 |
| 1993 | 2 | 0 |
| 1994 | 2 | 0 |
| 1995 | 1 | 0 |
| 1996 | 3 | 0 |
| 1997 | 0 | 0 |
| 1998 | 3 | 0 |
| 1999 | 1 | 0 |
| 2000 | 0 | 0 |
| 2001 | 1 | 0 |
| 2002 | 0 | 1 |
| 2003 | 0 | 1 |
| 2004 | 1 | 3 |
| 2005 | 4 | 1 |
| 2006 | 0 | 0 |
| 2007 | 0 | 2 |
| 2008 | 0 | 0 |
| 2009 | 1 | 0 |
| 2010 | 0 | 2 |
| 2011 | 0 | 1 |
| 2012 | 1 | 1 |
| 2013 | 1 | 0 |
| 2014 | 1 | 2 |
| 2015 | 0 | 0 |
| 2016 | 0 | 0 |
| 2017 | 0 | 1 |
| 2018 | 1 | 1 |
| 2019 | 0 | 0 |
| 2020 | 0 | 0 |
| 2021 | 0 | 1 |
| 2022 | 0 | 1 |
| 2023 | 0 | 3 |
| 2024 | 2 | 1 |
| 2025 | 4 | 3 |
| 2026 | 0 | 3 |
By publication year. Applications have been published since 2001. 2026 runs to 8 Oct.
Recent patents
- Wetting composition25 Nov 2025US 12,480,053 B2Advanced Wetting Technologies Pty Ltd
- Surfactant formulations for aqueous foam stability at high temperature and high salinity conditions14 Oct 2025US 12,441,940 B1Dow Global Technologies LLC
- Polyanionic surfactants and methods of making and using thereof29 Jul 2025US 12,371,619 B2Chevron U.S.A.Inc.
- Polyanionic surfactants and methods of making and using thereof29 Apr 2025US 12,286,588 B2Chevron U.S.A.Inc.
- Surfactant formulations for aqueous foam stability at high temperature and high salinity conditions29 Oct 2024US 12,129,421 B2Dow Global Technologies LLC
- Surfactants, surfactant compositions, and methods of using thereof24 Sep 2026US 2026/0286225 A1Chevron U.S.A.Inc.
- Emulsion Polymerized Emulsions from Polydimethyl Siloxane Mixture and Consequence of Cyclic Generation in Final Emulsion27 Aug 2026US 2026/0250577 A1
- Polyanionic surfactants and methods of making and using thereof26 Feb 2026US 2026/0055314 A1Chevron U.S.A.Inc.
- Polyanionic surfactants and methods of making and using thereof20 Nov 2025US 2025/0354063 A1Chevron U.S.A.Inc.
- Composition and method for abating fouling by low-density inorganic, organic and inorganic-organic hybrid foulants in hydrocarbon processes10 Apr 2025US 2025/0115811 A1Ecolab USA Inc.
Most cited
By later US patents
- Oil recovery method for waxy crude oil using alkylaryl sulfonate surfactants derived from alpha-olefins and the alpha-olefin compositions134US 6,269,881 B1Chevron Chemical Company · 2001
- Biodegradable copolymers, methods of producing them and their use63US 5,830,956 AChemische Fabrik Stockhausen GmbH · 1998
- Surfactant44US 5,332,854 ADai-Ichi Kogyo Seiyaku Co., Ltd. · 1994
- Emulsifier system for aqueous emulsion polymerization32US 6,974,852 B2BASF SE · 2005
- Process for polymerization of itaconic acid30US 5,223,592 ARohm and Haas Company · 1993