C07C 309/62
Sulfonated fats, oils or waxes of undetermined constitution
Official title: Sulfonated fats, oils or waxes of undetermined constitution {(bituminosulfonic acid C07G9/00; chemical modification of petroleum waxes C10G73/38)}
C07C309/62 (Sulfonated fats, oils or waxes of undetermined constitution) appears on 26 US grants and 7 published applications in this corpus.
Search patents in C07C- Granted patents
- 26
- Published applications
- 7
- Assignees
- 14
- Inventors
- 54
- Latest grant
- 13 Oct 2020
Filings by year
| Year | Granted patents | Published applications |
|---|---|---|
| 1976 | 3 | 0 |
| 1977 | 0 | 0 |
| 1978 | 0 | 0 |
| 1979 | 4 | 0 |
| 1980 | 2 | 0 |
| 1981 | 2 | 0 |
| 1982 | 2 | 0 |
| 1983 | 3 | 0 |
| 1984 | 1 | 0 |
| 1985 | 1 | 0 |
| 1986 | 1 | 0 |
| 1987 | 0 | 0 |
| 1988 | 2 | 0 |
| 1989 | 0 | 0 |
| 1990 | 0 | 0 |
| 1991 | 0 | 0 |
| 1992 | 0 | 0 |
| 1993 | 0 | 0 |
| 1994 | 0 | 0 |
| 1995 | 0 | 0 |
| 1996 | 0 | 0 |
| 1997 | 0 | 0 |
| 1998 | 0 | 0 |
| 1999 | 0 | 0 |
| 2000 | 0 | 0 |
| 2001 | 0 | 0 |
| 2002 | 0 | 0 |
| 2003 | 0 | 0 |
| 2004 | 0 | 0 |
| 2005 | 0 | 0 |
| 2006 | 0 | 1 |
| 2007 | 0 | 0 |
| 2008 | 1 | 1 |
| 2009 | 0 | 0 |
| 2010 | 0 | 0 |
| 2011 | 0 | 0 |
| 2012 | 0 | 0 |
| 2013 | 0 | 1 |
| 2014 | 1 | 0 |
| 2015 | 0 | 1 |
| 2016 | 0 | 0 |
| 2017 | 0 | 0 |
| 2018 | 1 | 3 |
| 2019 | 1 | 0 |
| 2020 | 1 | 0 |
By publication year. Applications have been published since 2001.
Recent patents
- Process for making renewable surfactant intermediates and surfactants from fats and oils and products thereof13 Oct 2020US 10,800,975 B2The Procter & Gamble Company
- Alpha-olefin sulfonic dimer acid process11 Jun 2019US 10,315,988 B2Stepan Company
- Process for making renewable surfactant intermediates and surfactants from fats and oils and products thereof12 Jun 2018US 9,994,497 B2The Procter & Gamble Company
- Sulfonated internal olefin surfactant for enhanced oil recovery18 Nov 2014US 8,889,600 B2Stepan Company
- Polycyclic aromatic carbon based solid strong acid26 Feb 2008US 7,335,790 B2Japan Science and Technology Agency
- Essential oil derivatives, their preparation and uses20 Sep 2018US 2018/0265804 A1Volare & Connecting, LLC
- Process for making renewable surfactant intermediates and surfactants from fats and oils and products thereof6 Sep 2018US 2018/0251411 A1The Procter & Gamble Company
- Alpha-olefin sulfonic dimer acid process9 Aug 2018US 2018/0222854 A1Stepan Company
- Process for making renewable surfactant intermediates and surfactants from fats and oils and products thereof27 Aug 2015US 2015/0240187 A1The Procter & Gamble Company
- Sulfonated internal olefin surfactant for enhanced oil recovery28 Mar 2013US 2013/0079261 A1Stepan Company
Most cited
By later US patents
- Process for sulfonation57US 4,148,821 AStepan Chemical Company · 1979
- Sulfonation petroleum composition30US 4,390,474 AStepan Chemical Company · 1983
- Production of sulfonated asphalt19US 4,741,868 APhillips Petroleum Company · 1988
- Method for preparing dispersing agent12US 3,970,690 AKureha Kagaku Kogyo Kabushiki Kaisha · 1976
- Apparatus for the sulfonation or sulfation of organic liquids11US 4,335,079 A1982