B01D 53/8609
Sulfur oxides
Official title: {Sulfur oxides}
B01D53/8609 (Sulfur oxides) appears on 226 US grants and 145 published applications in this corpus.
Search patents in B01D- Granted patents
- 226
- Published applications
- 145
- Assignees
- 164
- Inventors
- 529
- Latest grant
- 17 Mar 2026
Filings by year
| Year | Granted patents | Published applications |
|---|---|---|
| 1976 | 9 | 0 |
| 1977 | 7 | 0 |
| 1978 | 4 | 0 |
| 1979 | 1 | 0 |
| 1980 | 6 | 0 |
| 1981 | 5 | 0 |
| 1982 | 5 | 0 |
| 1983 | 3 | 0 |
| 1984 | 6 | 0 |
| 1985 | 1 | 0 |
| 1986 | 6 | 0 |
| 1987 | 4 | 0 |
| 1988 | 3 | 0 |
| 1989 | 3 | 0 |
| 1990 | 4 | 0 |
| 1991 | 3 | 0 |
| 1992 | 8 | 0 |
| 1993 | 6 | 0 |
| 1994 | 6 | 0 |
| 1995 | 3 | 0 |
| 1996 | 10 | 0 |
| 1997 | 5 | 0 |
| 1998 | 3 | 0 |
| 1999 | 1 | 0 |
| 2000 | 6 | 0 |
| 2001 | 2 | 2 |
| 2002 | 0 | 6 |
| 2003 | 6 | 7 |
| 2004 | 2 | 9 |
| 2005 | 8 | 7 |
| 2006 | 4 | 4 |
| 2007 | 3 | 3 |
| 2008 | 5 | 4 |
| 2009 | 2 | 6 |
| 2010 | 4 | 6 |
| 2011 | 5 | 6 |
| 2012 | 5 | 6 |
| 2013 | 6 | 2 |
| 2014 | 5 | 6 |
| 2015 | 3 | 7 |
| 2016 | 2 | 9 |
| 2017 | 5 | 7 |
| 2018 | 8 | 6 |
| 2019 | 10 | 8 |
| 2020 | 3 | 5 |
| 2021 | 2 | 4 |
| 2022 | 6 | 6 |
| 2023 | 4 | 7 |
| 2024 | 5 | 4 |
| 2025 | 1 | 3 |
| 2026 | 2 | 5 |
By publication year. Applications have been published since 2001. 2026 runs to 8 Oct.
Recent patents
- Fresh air ventilation device for air pollution prevention17 Mar 2026US 12,578,108 B2Microjet Technology Co., Ltd.
- Preparation capable of simultaneously removing NO, SO2 and HCl13 Jan 2026US 12,521,707 B2University of Science and Technology Beijing
- Method for recycling electronic-grade and industrial-grade sulfuric acid20 May 2025US 12,303,832 B2Sar Technology Inc.
- Catalyst for use in the catalytic reduction of sulfur contained in a gas stream and method of making and using such catalyst22 Oct 2024US 12,121,883 B2Shell USA, Inc.
- Catalyst for catalytic reduction of industrial flue gas SO2 with CO to prepare sulfur, method for preparing same and use thereof17 Sep 2024US 12,090,467 B2Nanjing Gekof Institute of Environmental Protection Technology & Equipment Co., Ltd.
- Sulfur poisoning-resistant catalyst for catalytic combustion, preparation method therefor, and use thereof30 Jul 2026US 2026/0216707 A1Guangdong University of Technology
- Carbon dioxide pipeline additives4 Jun 2026US 2026/0151731 A1ChampionX LLC
- Organic matter decomposition catalyst, honeycomb structure, method for decomposing organic matter, and organic matter decomposition device7 May 2026US 2026/0124602 A1Murata Manufacturing Co., Ltd.
- Method for producing carbon dioxide absorbent and desulfurization catalyst2 Apr 2026US 2026/0091379 A1
- Method and system for treating sulfur dioxide containing stream by catalytic oxidation and acid aqueous absorption12 Feb 2026US 2026/0042058 A1Saudi Arabian Oil Company
Most cited
By later US patents
- System and process for removal of pollutants from a gas stream101US 6,610,263 B2EnviroScrub Technologies Corporation · 2003
- Method for using a regenerable catalyzed trap88US 5,792,436 AEngelhard Corporation · 1998
- Process for the regeneration of a catalyst plant and apparatus for performing the process74US 6,946,419 B2ALSTOM Technology Ltd · 2005
- Ion transport membranes with catalyzed mixed conducting porous layer73US 5,534,471 AAir Products and Chemicals, Inc. · 1996
- Process for the regeneration of a catalyst plant and apparatus for performing the process73US 7,611,681 B2ALSTOM Technology Ltd · 2009