C01B 17/18
Hydrogen polysulfides
C01B17/18 (Hydrogen polysulfides) appears on 3 US grants and 4 published applications in this corpus.
Search patents in C01B- Granted patents
- 3
- Published applications
- 4
- Assignees
- 4
- Inventors
- 12
- Latest grant
- 4 Nov 2025
Filings by year
| Year | Granted patents | Published applications |
|---|---|---|
| 1988 | 1 | 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 | 0 |
| 2007 | 0 | 0 |
| 2008 | 0 | 0 |
| 2009 | 0 | 0 |
| 2010 | 0 | 0 |
| 2011 | 0 | 0 |
| 2012 | 0 | 0 |
| 2013 | 0 | 0 |
| 2014 | 0 | 0 |
| 2015 | 0 | 0 |
| 2016 | 0 | 0 |
| 2017 | 0 | 0 |
| 2018 | 0 | 0 |
| 2019 | 0 | 0 |
| 2020 | 0 | 0 |
| 2021 | 0 | 1 |
| 2022 | 1 | 0 |
| 2023 | 0 | 0 |
| 2024 | 0 | 1 |
| 2025 | 1 | 0 |
| 2026 | 0 | 2 |
By publication year. Applications have been published since 2001. 2026 runs to 8 Oct.
Recent patents
- Hydrogen sulfide dissociation using reactive sulfur species4 Nov 2025US 12,459,816 B2Saudi Arabian Oil Company
- Process to convert a sulphur compound22 Mar 2022US 11,279,619 B2Paqell B.V.
- Method for flocculating suspensions containing swelled layered chalcogenide1 Mar 1988US 4,728,439 AMobil Oil Corporation
- Sulfine-Based Compounds for Generating Hydrogen Persulfide10 Sep 2026US 2026/0265055 A1Brown University
- Hydrogen sulfide dissociation using reactive sulfur species5 Feb 2026US 2026/0035245 A1Saudi Arabian Oil Company
- Hydrogen sulfide dissociation using reactive sulfur species22 Feb 2024US 2024/0059564 A1Saudi Arabian Oil Company
- Process to convert a sulphur compound13 May 2021US 2021/0139327 A1Paqell B.V.
Most cited
By later US patents