C01B 2203/0485
The impurity being a sulfur compound
Official title: the impurity being a sulfur compound
C01B2203/0485 (The impurity being a sulfur compound) appears on 659 US grants and 704 published applications in this corpus.
Search patents in C01B- Granted patents
- 659
- Published applications
- 704
- Assignees
- 329
- Inventors
- 1,486
- Latest grant
- 4 Aug 2026
Filings by year
| Year | Granted patents | Published applications |
|---|---|---|
| 1976 | 3 | 0 |
| 1977 | 8 | 0 |
| 1978 | 6 | 0 |
| 1979 | 9 | 0 |
| 1980 | 10 | 0 |
| 1981 | 1 | 0 |
| 1982 | 7 | 0 |
| 1983 | 5 | 0 |
| 1984 | 5 | 0 |
| 1985 | 5 | 0 |
| 1986 | 3 | 0 |
| 1987 | 3 | 0 |
| 1988 | 8 | 0 |
| 1989 | 13 | 0 |
| 1990 | 7 | 0 |
| 1991 | 9 | 0 |
| 1992 | 7 | 0 |
| 1993 | 4 | 0 |
| 1994 | 1 | 0 |
| 1995 | 6 | 0 |
| 1996 | 4 | 0 |
| 1997 | 4 | 0 |
| 1998 | 3 | 0 |
| 1999 | 6 | 0 |
| 2000 | 14 | 0 |
| 2001 | 9 | 2 |
| 2002 | 8 | 25 |
| 2003 | 11 | 18 |
| 2004 | 12 | 23 |
| 2005 | 7 | 25 |
| 2006 | 16 | 22 |
| 2007 | 11 | 24 |
| 2008 | 12 | 24 |
| 2009 | 14 | 45 |
| 2010 | 34 | 65 |
| 2011 | 40 | 71 |
| 2012 | 37 | 44 |
| 2013 | 48 | 35 |
| 2014 | 38 | 36 |
| 2015 | 44 | 23 |
| 2016 | 24 | 26 |
| 2017 | 14 | 21 |
| 2018 | 25 | 14 |
| 2019 | 14 | 13 |
| 2020 | 9 | 16 |
| 2021 | 11 | 13 |
| 2022 | 8 | 23 |
| 2023 | 22 | 37 |
| 2024 | 18 | 23 |
| 2025 | 13 | 22 |
| 2026 | 9 | 14 |
By publication year. Applications have been published since 2001. 2026 runs to 8 Oct.
Recent patents
- Processes and systems for upgrading a hydrocarbon-containing feed4 Aug 2026US 12,698,451 B2ExxonMobil Chemical Patents Inc.
- Maximizing syngas carbon utilization and conversion to biofuel28 Jul 2026US 12,692,155 B2Enerkem, Inc.
- Melt pyrolysis of hydrocarbon feedstock containing nitrogen and/or hydrogen sulphide21 Apr 2026US 12,606,438 B2Nederlandse Organisatie voor toegepast-natuurwetenschappelijk onderzoek TNO
- Co-production of hydrogen and sulfuric acid by partial oxidation of sulfur7 Apr 2026US 12,595,171 B2Saudi Arabian Oil Company
- Direct coupled atmospheric carbon reduction device with hydrogen utilization24 Mar 2026US 12,583,744 B2
- Apparatus for producing hydrogen gas8 Oct 2026US 2026/0307988 A1Hyundai Motor Company
- Method for production of clean hydrogen20 Aug 2026US 2026/0242217 A1Posco Holdings Inc.
- Production system for organic substance, production device for organic substance, and method for producing organic substance20 Aug 2026US 2026/0242707 A1Sekisui Chemical Co., Ltd.
- Process and apparatus for removing co2 from a gasification syngas16 Jul 2026US 2026/0200728 A1L Air Liquide, Societe Anonyme Pour L'Etude et L'Exploitation des Procedes Georges Claude
- Systems and methods to produce hydrogen gas from hydrogen sulfide18 Jun 2026US 2026/0167485 A1Saudi Arabian Oil Company
Most cited
By later US patents
- Methanol from coal and natural gas294US 4,407,973 AThe M. W. Kellogg Company · 1983
- Method of producing methanol synthesis gas283US 4,994,093 AKrupp-Koppers GmbH · 1991
- Fuel cell electric power production199US 4,522,894 AEngelhard Corporation · 1985
- 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