B01D 2257/30
Sulfur compounds
B01D2257/30 (Sulfur compounds) appears on 2,962 US grants and 3,799 published applications in this corpus.
Search patents in B01D- Granted patents
- 2,962
- Published applications
- 3,799
- Assignees
- 1,578
- Inventors
- 7,340
- Latest grant
- 6 Oct 2026
Filings by year
| Year | Granted patents | Published applications |
|---|---|---|
| 1976 | 5 | 0 |
| 1977 | 10 | 0 |
| 1978 | 4 | 0 |
| 1979 | 5 | 0 |
| 1980 | 4 | 0 |
| 1981 | 8 | 0 |
| 1982 | 5 | 0 |
| 1983 | 1 | 0 |
| 1984 | 7 | 0 |
| 1985 | 5 | 0 |
| 1986 | 6 | 0 |
| 1987 | 7 | 0 |
| 1988 | 12 | 0 |
| 1989 | 7 | 0 |
| 1990 | 8 | 0 |
| 1991 | 6 | 0 |
| 1992 | 5 | 0 |
| 1993 | 9 | 0 |
| 1994 | 13 | 0 |
| 1995 | 16 | 0 |
| 1996 | 19 | 0 |
| 1997 | 30 | 0 |
| 1998 | 24 | 0 |
| 1999 | 16 | 0 |
| 2000 | 24 | 0 |
| 2001 | 24 | 8 |
| 2002 | 22 | 29 |
| 2003 | 31 | 39 |
| 2004 | 20 | 42 |
| 2005 | 18 | 64 |
| 2006 | 28 | 55 |
| 2007 | 34 | 61 |
| 2008 | 36 | 100 |
| 2009 | 47 | 124 |
| 2010 | 82 | 213 |
| 2011 | 83 | 181 |
| 2012 | 120 | 195 |
| 2013 | 174 | 186 |
| 2014 | 164 | 179 |
| 2015 | 135 | 164 |
| 2016 | 134 | 243 |
| 2017 | 177 | 200 |
| 2018 | 185 | 230 |
| 2019 | 210 | 237 |
| 2020 | 196 | 194 |
| 2021 | 139 | 185 |
| 2022 | 165 | 162 |
| 2023 | 138 | 180 |
| 2024 | 128 | 206 |
| 2025 | 135 | 183 |
| 2026 | 81 | 139 |
By publication year. Applications have been published since 2001. 2026 runs to 8 Oct.
Subgroups
Granted patents
Recent patents
- Adsorbent bed with increased hydrothermal stability6 Oct 2026US 12,752,233 B2BASF SE
- Use of silica nanoparticles with triazine for H2S scavenging6 Oct 2026US 12,752,236 B2Nissan Chemical America Corporation
- Produced water degassing using ejector6 Oct 2026US 12,753,686 B1Saudi Arabian Oil Company
- Analysis device and analysis method for quality index of natural gas product and application6 Oct 2026US 12,754,171 B2PetroChina Company Limited
- Air conditioning and filtration system29 Sep 2026US 12,746,502 B2Work Air Technologies Pty Ltd
- Filter system for the removal of volatile organosulfur compounds (voscs) from indoor air8 Oct 2026US 2026/0306980 A1Air Tech Group, SLU
- Process and apparatus for separating carbon dioxide from a flue gas stream8 Oct 2026US 2026/0306999 A1L Air Liquide, Societe Anonyme Pour L'Etude et L'Exploitation des Procedes Georges Claude
- Composite amine absorption liquid1 Oct 2026US 2026/0295512 A1Mitsubishi Heavy Industries, Ltd.
- Conditioning wet sour gas via integrated desulfurization and dehydration24 Sep 2026US 2026/0284582 A1Merichem Technologies, LLC
- Hydrogen sulphide and mercaptan scavenging additive concentrate comprising an oxazolidine compound and an alkoxylated amine24 Sep 2026US 2026/0284585 A1TotalEnergies One Tech
Most cited
By later US patents
- Microcomponent assembly for efficient contacting of fluid191US 6,126,723 ABattelle Memorial Institute · 2000
- System and method for sequestration and separation of mercury in combustion exhaust gas aqueous scrubber systems182US 7,722,843 B12010
- Process for purifying a gas by adsorption of the impurities on several active carbons147US 6,402,813 B2L 'Air Liquide-Societe 'Anonyme a 'Directoire et Conseil de Surveillance pour l 'Etude et L'Exploitation des Procedes Georges Claude · 2002
- Method and apparatus for treating a sour gas146US 8,206,669 B2Air Products and Chemicals, Inc. · 2012
- Regeneration of adsorbents138US 4,784,672 AAir Products and Chemicals, Inc. · 1988