C09K 8/532
Sulfur
C09K8/532 (Sulfur) appears on 174 US grants and 204 published applications in this corpus.
Search patents in C09K- Granted patents
- 174
- Published applications
- 204
- Assignees
- 85
- Inventors
- 409
- Latest grant
- 8 Sep 2026
Filings by year
| Year | Granted patents | Published applications |
|---|---|---|
| 1977 | 1 | 0 |
| 1978 | 0 | 0 |
| 1979 | 0 | 0 |
| 1980 | 3 | 0 |
| 1981 | 2 | 0 |
| 1982 | 1 | 0 |
| 1983 | 0 | 0 |
| 1984 | 0 | 0 |
| 1985 | 0 | 0 |
| 1986 | 0 | 0 |
| 1987 | 1 | 0 |
| 1988 | 2 | 0 |
| 1989 | 4 | 0 |
| 1990 | 3 | 0 |
| 1991 | 2 | 0 |
| 1992 | 1 | 0 |
| 1993 | 1 | 0 |
| 1994 | 1 | 0 |
| 1995 | 1 | 0 |
| 1996 | 5 | 0 |
| 1997 | 1 | 0 |
| 1998 | 1 | 0 |
| 1999 | 0 | 0 |
| 2000 | 0 | 0 |
| 2001 | 0 | 0 |
| 2002 | 0 | 0 |
| 2003 | 0 | 0 |
| 2004 | 0 | 0 |
| 2005 | 1 | 2 |
| 2006 | 0 | 0 |
| 2007 | 1 | 0 |
| 2008 | 0 | 2 |
| 2009 | 0 | 2 |
| 2010 | 0 | 1 |
| 2011 | 1 | 2 |
| 2012 | 0 | 6 |
| 2013 | 4 | 11 |
| 2014 | 5 | 5 |
| 2015 | 4 | 5 |
| 2016 | 3 | 11 |
| 2017 | 7 | 21 |
| 2018 | 9 | 20 |
| 2019 | 22 | 19 |
| 2020 | 17 | 17 |
| 2021 | 8 | 11 |
| 2022 | 11 | 11 |
| 2023 | 15 | 12 |
| 2024 | 13 | 20 |
| 2025 | 17 | 15 |
| 2026 | 6 | 11 |
By publication year. Applications have been published since 2001. 2026 runs to 8 Oct.
Recent patents
- Odor management for disulfide solvents and surfaces contacted therewith8 Sep 2026US 12,729,337 B2ExxonMobil Technology and Engineering Company
- Systems and methods for wellbore drilling utilizing a thermochemical sulfate reduction (TSR) proxy25 Aug 2026US 12,716,349 B2Saudi Arabian Oil Company
- Compositions and methods for the dissolution of iron sulfide12 May 2026US 12,624,276 B2Solugen, Inc.
- Compositions and methods for scavenging sulfur-containing compounds24 Mar 2026US 12,584,060 B2ChampionX USA Inc.
- Photocatalytic conversion of hydrogen sulfide to hydrogen24 Feb 2026US 12,559,366 B2Saudi Arabian Oil Company
- Particulate compositions for iron sulfide remediation1 Oct 2026US 2026/0297419 A1ChampionX LLC
- Scale inhibitor composition and methods of using the same for treating scale in a wellbore20 Aug 2026US 2026/0242658 A1Saudi Arabian Oil Company
- Ionic liquids and use thereof for dissolving or preventing deposits, mainly formed by sulfur, which impair production of gas wells6 Aug 2026US 2026/0226341 A1ENI S. p. A.
- Compositions and methods of removing iron sulfide scales from low pressure gas wells30 Jul 2026US 2026/0218037 A1Saudi Arabian Oil Company
- Method of barite scale removal23 Jul 2026US 2026/0210210 A1King Fahd University of Petroleum and Minerals
Most cited
By later US patents
- Composition and method for sweetening hydrocarbons161US 4,978,512 AQuaker Chemical Corporation · 1990
- Mixtures of hexahydrotriazines useful as H.sub.2 S scavengers115US 5,347,004 ABaker Hughes Incorporated · 1994
- Process for mitigation of wellbore contaminants107US 6,942,037 B1Clariant Finance (BVI) Limited · 2005
- Foamer/sulfur scavenger composition and methods for making and using same76US 7,971,659 B2Clearwater International, LLC · 2011
- Process for scavenging H.sub.2 S by mixtures of hexahydrotriazines44US 5,554,349 ABanker Hughes Incorporated · 1996