B01D 53/8612
Hydrogen sulfide
Official title: {Hydrogen sulfide}
B01D53/8612 (Hydrogen sulfide) appears on 299 US grants and 241 published applications in this corpus.
Search patents in B01D- Granted patents
- 299
- Published applications
- 241
- Assignees
- 193
- Inventors
- 679
- Latest grant
- 6 Oct 2026
Filings by year
| Year | Granted patents | Published applications |
|---|---|---|
| 1976 | 3 | 0 |
| 1977 | 2 | 0 |
| 1978 | 0 | 0 |
| 1979 | 1 | 0 |
| 1980 | 1 | 0 |
| 1981 | 1 | 0 |
| 1982 | 2 | 0 |
| 1983 | 3 | 0 |
| 1984 | 3 | 0 |
| 1985 | 6 | 0 |
| 1986 | 4 | 0 |
| 1987 | 2 | 0 |
| 1988 | 1 | 0 |
| 1989 | 4 | 0 |
| 1990 | 6 | 0 |
| 1991 | 7 | 0 |
| 1992 | 6 | 0 |
| 1993 | 8 | 0 |
| 1994 | 5 | 0 |
| 1995 | 2 | 0 |
| 1996 | 8 | 0 |
| 1997 | 9 | 0 |
| 1998 | 10 | 0 |
| 1999 | 6 | 0 |
| 2000 | 11 | 0 |
| 2001 | 6 | 3 |
| 2002 | 4 | 8 |
| 2003 | 6 | 4 |
| 2004 | 4 | 4 |
| 2005 | 4 | 11 |
| 2006 | 2 | 8 |
| 2007 | 4 | 11 |
| 2008 | 8 | 5 |
| 2009 | 7 | 12 |
| 2010 | 9 | 13 |
| 2011 | 9 | 8 |
| 2012 | 3 | 5 |
| 2013 | 6 | 9 |
| 2014 | 9 | 12 |
| 2015 | 5 | 4 |
| 2016 | 7 | 11 |
| 2017 | 7 | 9 |
| 2018 | 12 | 14 |
| 2019 | 11 | 16 |
| 2020 | 15 | 12 |
| 2021 | 9 | 9 |
| 2022 | 9 | 14 |
| 2023 | 12 | 8 |
| 2024 | 9 | 17 |
| 2025 | 4 | 6 |
| 2026 | 7 | 8 |
By publication year. Applications have been published since 2001. 2026 runs to 8 Oct.
Subgroups
Granted patents
Recent patents
- Use of silica nanoparticles with triazine for H2S scavenging6 Oct 2026US 12,752,236 B2Nissan Chemical America Corporation
- Plasma treatment in sulfur recovery8 Sep 2026US 12,728,387 B2Saudi Arabian Oil Company
- Reactor system and method thereof for degassing sulfur14 Jul 2026US 12,679,728 B2Fluor Technologies Corporation
- 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.
- Reactor system and method thereof for degassing sulfur1 Oct 2026US 2026/0296887 A1Fluor Technologies Corporation
- Tail gas treatment by two stage adsorption with intermediate cooling30 Jul 2026US 2026/0216647 A1Saudi Arabian Oil Company
- High efficiency electro-photocatalysts16 Jul 2026US 2026/0199827 A1
- Hydroxyl-based system for filtering and disinfecting air and liquids and a method of use4 Jun 2026US 2026/0151530 A1
- Hydrogen sulfide removal process4 Jun 2026US 2026/0151734 A1Merichem Technologies, LLC
Most cited
By later US patents
- Process for recovering as sulfur the compounds H2S, SO2, COS and/or CS2 in a tail gas from a sulfur plant52US 6,444,185 B1Elf Exploration Production · 2002
- Process for the production of sulfur52US 6,776,974 B1Monsanto Enviro-Chem Systems, Inc. · 2004
- Catalysts for controlling auto exhaust emissions including hydrocarbon, carbon monoxide, nitrogen oxides and hydrogen sulfide and method of making the catalysts50US 4,780,447 AW. R. Grace & Co.-Conn. · 1988
- Composite catalytic converter48US 5,140,813 A1992
- Method for treating hydrogen sulfide-containing waste gases45US 6,569,398 B2GAA Engineered Systems, Inc. · 2003