C01B 17/0404
By processes comprising a dry catalytic conversion of hydrogen sulfide-containing gases
Official title: {by processes comprising a dry catalytic conversion of hydrogen sulfide-containing gases, e.g. the Claus process}
C01B17/0404 (By processes comprising a dry catalytic conversion of hydrogen sulfide-containing gases) appears on 601 US grants and 339 published applications in this corpus.
Search patents in C01B- Granted patents
- 601
- Published applications
- 339
- Assignees
- 239
- Inventors
- 918
- Latest grant
- 22 Sep 2026
Filings by year
| Year | Granted patents | Published applications |
|---|---|---|
| 1976 | 14 | 0 |
| 1977 | 15 | 0 |
| 1978 | 15 | 0 |
| 1979 | 11 | 0 |
| 1980 | 11 | 0 |
| 1981 | 9 | 0 |
| 1982 | 8 | 0 |
| 1983 | 13 | 0 |
| 1984 | 21 | 0 |
| 1985 | 17 | 0 |
| 1986 | 13 | 0 |
| 1987 | 4 | 0 |
| 1988 | 8 | 0 |
| 1989 | 19 | 0 |
| 1990 | 11 | 0 |
| 1991 | 14 | 0 |
| 1992 | 11 | 0 |
| 1993 | 8 | 0 |
| 1994 | 9 | 0 |
| 1995 | 6 | 0 |
| 1996 | 13 | 0 |
| 1997 | 11 | 0 |
| 1998 | 9 | 0 |
| 1999 | 6 | 0 |
| 2000 | 15 | 0 |
| 2001 | 11 | 3 |
| 2002 | 9 | 17 |
| 2003 | 11 | 5 |
| 2004 | 6 | 7 |
| 2005 | 8 | 13 |
| 2006 | 7 | 10 |
| 2007 | 9 | 9 |
| 2008 | 7 | 10 |
| 2009 | 11 | 22 |
| 2010 | 18 | 17 |
| 2011 | 10 | 16 |
| 2012 | 10 | 23 |
| 2013 | 29 | 18 |
| 2014 | 19 | 20 |
| 2015 | 17 | 20 |
| 2016 | 8 | 8 |
| 2017 | 18 | 21 |
| 2018 | 16 | 9 |
| 2019 | 14 | 14 |
| 2020 | 15 | 17 |
| 2021 | 14 | 12 |
| 2022 | 13 | 12 |
| 2023 | 11 | 9 |
| 2024 | 5 | 10 |
| 2025 | 5 | 12 |
| 2026 | 9 | 5 |
By publication year. Applications have been published since 2001. 2026 runs to 8 Oct.
Subgroups
Granted patents
- C01B 17/0456The hydrogen sulfide-containing gas being a claus process tail gas150
- C01B 17/0408Pretreatment of the hydrogen sulfide containing gases129
- C01B 17/0426Characterised by the catalytic conversion126
- C01B 17/046Without intermediate formation of sulfur dioxide125
- C01B 17/0413Characterised by the combustion step118
- C01B 17/0447Separation of the obtained sulfur50
- C01B 17/0452Process control41
Recent patents
- Catalyst medium comprising hollow microspheres22 Sep 2026US 12,741,267 B2Axens
- Process of converting hydrogen sulfide and carbon dioxide to methane and solid sulfur on carbon-based catalysts under milder conditions with reduced carbon footprint14 Jul 2026US 12,680,042 B2Saudi Arabian Oil Company
- Integrated sulfur recovery and hydrogen production process26 May 2026US 12,637,353 B2
- Removal of sulfur compounds from gas12 May 2026US 12,623,904 B2Saudi Arabian Oil Company
- Desulfurization of carbon dioxide-containing gases14 Apr 2026US 12,599,868 B2Air Products and Chemicals, Inc.
- Tail gas treatment by two stage adsorption with intermediate cooling30 Jul 2026US 2026/0216647 A1Saudi Arabian Oil Company
- Apparatus and method for honeycomb ceramic-based plasma degradation of sf618 Jun 2026US 2026/0166515 A1CSG Electric Power Research Institute Co., Ltd.
- Carbon footprint reduction for impurities removal from a produced gas30 Apr 2026US 2026/0115647 A1ChampionX LLC
- Systems, methods, and techniques for processing hydrogen sulfide19 Mar 2026US 2026/0078001 A1Ohio State Innovation Foundation
- Catalyst for catalytic oxidative cracking of hydrogen sulphide with concurrent hydrogen production5 Feb 2026US 2026/0035240 A1Nextchem Tech S.P.A.
Most cited
By later US patents
- Composite hydrogen separation element and module185US 5,498,278 ABend Research, Inc. · 1996
- Composite hydrogen separation element and module164US 5,645,626 ABend Research, Inc. · 1997
- Plasma whirl reactor apparatus and methods of use164US 7,622,693 B2Foret Plasma Labs, LLC · 2009
- Methods and configurations for acid gas enrichment156US 7,635,408 B2Fluor Technologies Corporation · 2009
- Method and apparatus for treating a sour gas146US 8,206,669 B2Air Products and Chemicals, Inc. · 2012