C01B 17/021
Separation of sulfur from gases
Official title: {Separation of sulfur from gases}
C01B17/021 (Separation of sulfur from gases) appears on 34 US grants and 29 published applications in this corpus.
Search patents in C01B- Granted patents
- 34
- Published applications
- 29
- Assignees
- 30
- Inventors
- 89
- Latest grant
- 1 Sep 2026
Filings by year
| Year | Granted patents | Published applications |
|---|---|---|
| 1981 | 1 | 0 |
| 1982 | 0 | 0 |
| 1983 | 1 | 0 |
| 1984 | 0 | 0 |
| 1985 | 0 | 0 |
| 1986 | 0 | 0 |
| 1987 | 0 | 0 |
| 1988 | 1 | 0 |
| 1989 | 0 | 0 |
| 1990 | 0 | 0 |
| 1991 | 0 | 0 |
| 1992 | 0 | 0 |
| 1993 | 0 | 0 |
| 1994 | 1 | 0 |
| 1995 | 0 | 0 |
| 1996 | 1 | 0 |
| 1997 | 0 | 0 |
| 1998 | 1 | 0 |
| 1999 | 0 | 0 |
| 2000 | 0 | 0 |
| 2001 | 0 | 0 |
| 2002 | 0 | 0 |
| 2003 | 0 | 0 |
| 2004 | 0 | 1 |
| 2005 | 0 | 2 |
| 2006 | 1 | 0 |
| 2007 | 0 | 0 |
| 2008 | 1 | 2 |
| 2009 | 0 | 3 |
| 2010 | 3 | 1 |
| 2011 | 3 | 2 |
| 2012 | 0 | 0 |
| 2013 | 1 | 1 |
| 2014 | 3 | 1 |
| 2015 | 1 | 0 |
| 2016 | 1 | 1 |
| 2017 | 2 | 1 |
| 2018 | 1 | 3 |
| 2019 | 1 | 0 |
| 2020 | 2 | 2 |
| 2021 | 2 | 1 |
| 2022 | 2 | 1 |
| 2023 | 2 | 2 |
| 2024 | 1 | 1 |
| 2025 | 0 | 3 |
| 2026 | 1 | 1 |
By publication year. Applications have been published since 2001. 2026 runs to 8 Oct.
Recent patents
- Producing hydrogen from hydrogen sulfide1 Sep 2026US 12,722,970 B2Saudi Arabian Oil Company
- Method for the desulfurization of methane-containing gases15 Oct 2024US 12,116,282 B2Desotec NV
- Gas-solid separating method and system for simple substance sulphur in sulphur-containing exhaust22 Aug 2023US 11,731,873 B2Kunming University of Science and Technology
- System and method for resource recycling of sulfur dioxide22 Aug 2023US 11,731,874 B2Jiangsu Deyitong Environmental Protection Technology Co., Ltd.
- Hydrogen sulfide production method and sulfur recovery method4 Oct 2022US 11,459,236 B2Sumitomo Chemical Company, Limited
- Apparatus for recovering sulfur from unsaturated sulfur vapor and use method therefor21 May 2026US 2026/0138049 A1Fuzhou University
- Simultaneous h2 production and co2 capture from acid gas stream10 Jul 2025US 2025/0222396 A1Saudi Arabian Oil Company
- H2s removal from produced water by plasma10 Jul 2025US 2025/0223196 A1Saudi Arabian Oil Company
- Metamaterial-enhanced photocatalytic conversion of hydrogen sulfide9 Jan 2025US 2025/0010265 A1Saudi Arabian Oil Company
- Producing hydrogen from hydrogen sulfide3 Oct 2024US 2024/0327208 A1Saudi Arabian Oil Company
Most cited
By later US patents
- Process for reducing sulfur emission of sulfur plant44US 8,871,176 B2China Petroleum & Chemical Corporation · 2014
- Low temperature sulfur recovery23US 4,391,791 AStandard Oil Company (Indiana) · 1983
- Reduction of particulate sulfur emissions from liquid sulfur storage tanks22US 5,340,383 AFreeport-Mcmoran Corporation · 1994
- Process for removing elemental sulfur from a gas stream20US 5,807,410 AComprimo B.V. · 1998
- System and method for sulfur recovery9US 7,901,646 B2General Electric Company · 2011