B01D 2257/302
Sulfur oxides
B01D2257/302 (Sulfur oxides) appears on 1,363 US grants and 1,746 published applications in this corpus.
Search patents in B01D- Granted patents
- 1,363
- Published applications
- 1,746
- Assignees
- 889
- Inventors
- 3,640
- Latest grant
- 29 Sep 2026
Filings by year
| Year | Granted patents | Published applications |
|---|---|---|
| 1976 | 4 | 0 |
| 1977 | 5 | 0 |
| 1978 | 4 | 0 |
| 1979 | 3 | 0 |
| 1980 | 4 | 0 |
| 1981 | 7 | 0 |
| 1982 | 5 | 0 |
| 1983 | 0 | 0 |
| 1984 | 3 | 0 |
| 1985 | 2 | 0 |
| 1986 | 5 | 0 |
| 1987 | 4 | 0 |
| 1988 | 6 | 0 |
| 1989 | 1 | 0 |
| 1990 | 6 | 0 |
| 1991 | 4 | 0 |
| 1992 | 1 | 0 |
| 1993 | 3 | 0 |
| 1994 | 7 | 0 |
| 1995 | 4 | 0 |
| 1996 | 10 | 0 |
| 1997 | 15 | 0 |
| 1998 | 10 | 0 |
| 1999 | 3 | 0 |
| 2000 | 11 | 0 |
| 2001 | 8 | 5 |
| 2002 | 8 | 12 |
| 2003 | 12 | 14 |
| 2004 | 7 | 12 |
| 2005 | 5 | 26 |
| 2006 | 14 | 27 |
| 2007 | 12 | 27 |
| 2008 | 14 | 38 |
| 2009 | 18 | 67 |
| 2010 | 39 | 110 |
| 2011 | 42 | 80 |
| 2012 | 67 | 82 |
| 2013 | 80 | 91 |
| 2014 | 72 | 82 |
| 2015 | 71 | 91 |
| 2016 | 63 | 123 |
| 2017 | 94 | 92 |
| 2018 | 99 | 100 |
| 2019 | 92 | 114 |
| 2020 | 97 | 91 |
| 2021 | 69 | 76 |
| 2022 | 76 | 78 |
| 2023 | 54 | 89 |
| 2024 | 43 | 80 |
| 2025 | 48 | 80 |
| 2026 | 32 | 59 |
By publication year. Applications have been published since 2001. 2026 runs to 8 Oct.
Recent patents
- Air conditioning and filtration system29 Sep 2026US 12,746,502 B2Work Air Technologies Pty Ltd
- Photocatalyst filter and electronic device comprising same15 Sep 2026US 12,734,266 B2Samsung Electronics Co., Ltd.
- Plasma treatment in sulfur recovery8 Sep 2026US 12,728,387 B2Saudi Arabian Oil Company
- Flue gas purification system for hazardous waste incineration and purification method25 Aug 2026US 12,714,969 B2Chongqing Greening Environmental Protection Co. Ltd
- Process for treating a gas stream from plastic pyrolisis and/or biomass pyrolisis, and installation for integration into a steam cracker11 Aug 2026US 12,703,671 B2Technip Energies France
- 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
- Cleaning of co2 containing feed gases24 Sep 2026US 2026/0285689 A1Topsoe A/S
- Cleaning of co2 containing feed gases24 Sep 2026US 2026/0285690 A1Topsoe A/S
- Method and apparatus for cooling and compressing a flow containing co2 and water10 Sep 2026US 2026/0264005 A1L'Air Liquide, Société Anonyme p0our I'Etude et I'Exploitation des Procédés Georges Claude
- Process for removing sulfur containing compounds from gas containing at least one sulfur containing compound10 Sep 2026US 2026/0264009 A1Sulzer Management AG
Most cited
By later US patents
- 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
- Building system for cascading flows of matter and energy123US 10,197,338 B22019
- Production of carbonate-containing compositions from material comprising metal silicates111US 7,749,476 B2Calera Corporation · 2010
- Air cleaning adsorption process105US 4,012,206 AGas Developments Corporation · 1977