B01D 53/48
Sulfur compounds
B01D53/48 (Sulfur compounds) appears on 3,377 US grants and 2,272 published applications in this corpus.
Search patents in B01D- Granted patents
- 3,377
- Published applications
- 2,272
- Assignees
- 1,475
- Inventors
- 6,011
- Latest grant
- 6 Oct 2026
Filings by year
| Year | Granted patents | Published applications |
|---|---|---|
| 1976 | 87 | 0 |
| 1977 | 60 | 0 |
| 1978 | 71 | 0 |
| 1979 | 55 | 0 |
| 1980 | 73 | 0 |
| 1981 | 69 | 0 |
| 1982 | 58 | 0 |
| 1983 | 55 | 0 |
| 1984 | 55 | 0 |
| 1985 | 74 | 0 |
| 1986 | 69 | 0 |
| 1987 | 48 | 0 |
| 1988 | 51 | 0 |
| 1989 | 75 | 0 |
| 1990 | 61 | 0 |
| 1991 | 51 | 0 |
| 1992 | 57 | 0 |
| 1993 | 62 | 0 |
| 1994 | 64 | 0 |
| 1995 | 54 | 0 |
| 1996 | 67 | 0 |
| 1997 | 77 | 0 |
| 1998 | 52 | 0 |
| 1999 | 42 | 0 |
| 2000 | 49 | 0 |
| 2001 | 51 | 4 |
| 2002 | 34 | 39 |
| 2003 | 45 | 38 |
| 2004 | 25 | 50 |
| 2005 | 19 | 37 |
| 2006 | 22 | 49 |
| 2007 | 24 | 38 |
| 2008 | 26 | 66 |
| 2009 | 38 | 60 |
| 2010 | 56 | 89 |
| 2011 | 49 | 99 |
| 2012 | 58 | 103 |
| 2013 | 101 | 128 |
| 2014 | 112 | 136 |
| 2015 | 99 | 125 |
| 2016 | 94 | 134 |
| 2017 | 121 | 136 |
| 2018 | 117 | 162 |
| 2019 | 149 | 140 |
| 2020 | 138 | 128 |
| 2021 | 108 | 108 |
| 2022 | 102 | 90 |
| 2023 | 87 | 86 |
| 2024 | 57 | 96 |
| 2025 | 70 | 76 |
| 2026 | 39 | 55 |
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
- System and method of treatment of gas contaminated with hydrogen sulfide and the reduction of hydrogen sulfide associated odor29 Sep 2026US 12,746,506 B2Streamline Innovations Inc
- Flue gas purification system for hazardous waste incineration and purification method25 Aug 2026US 12,714,969 B2Chongqing Greening Environmental Protection Co. Ltd
- Steel mill offgas separation and purification18 Aug 2026US 12,708,874 B2Air Products and Chemicals, Inc.
- Apparatus for reducing greenhouse gas emission in vessel and vessel including the same14 Jul 2026US 12,678,736 B2Daewoo Shipbuilding & Marine Engineering Co., 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
- Removal of atmospheric pollutants from gas, related apparatus, processes and uses thereof24 Sep 2026US 2026/0284589 A1Intelligent Abatement, LLC
- Compositions and methods for carbon dioxide capture and fluid sweetening10 Sep 2026US 2026/0263993 A1Solugen, Inc.
- Exhaust gas treatment apparatus10 Sep 2026US 2026/0263994 A1Nanomist Technologies Co., Ltd.
Most cited
By later US patents
- Removal of sulfur dioxide from process gas using treated oil shale and water278US 4,093,026 AOccidental Oil Shale, Inc. · 1978
- Two-stage removal of sulfur dioxide from process gas using treated oil shale208US 4,140,181 AOccidental Oil Shale, Inc. · 1979
- System and method for sequestration and separation of mercury in combustion exhaust gas aqueous scrubber systems182US 7,722,843 B12010
- Methods for removing air pollutants from combustion flue gas143US 5,670,122 AEnergy and Environmental Research Corporation · 1997
- Flue gas control system of coal combustion boiler and operating method thereof122US 8,071,060 B2Mitsubishi Heavy Industries, Ltd. · 2011