B01D 53/8637
Simultaneously removing sulfur oxides and nitrogen oxides
Official title: {Simultaneously removing sulfur oxides and nitrogen oxides}
B01D53/8637 (Simultaneously removing sulfur oxides and nitrogen oxides) appears on 107 US grants and 64 published applications in this corpus.
Search patents in B01D- Granted patents
- 107
- Published applications
- 64
- Assignees
- 76
- Inventors
- 247
- Latest grant
- 13 Jan 2026
Filings by year
| Year | Granted patents | Published applications |
|---|---|---|
| 1976 | 1 | 0 |
| 1977 | 2 | 0 |
| 1978 | 2 | 0 |
| 1979 | 3 | 0 |
| 1980 | 3 | 0 |
| 1981 | 4 | 0 |
| 1982 | 0 | 0 |
| 1983 | 1 | 0 |
| 1984 | 2 | 0 |
| 1985 | 1 | 0 |
| 1986 | 0 | 0 |
| 1987 | 0 | 0 |
| 1988 | 3 | 0 |
| 1989 | 4 | 0 |
| 1990 | 2 | 0 |
| 1991 | 4 | 0 |
| 1992 | 2 | 0 |
| 1993 | 6 | 0 |
| 1994 | 3 | 0 |
| 1995 | 3 | 0 |
| 1996 | 7 | 0 |
| 1997 | 1 | 0 |
| 1998 | 3 | 0 |
| 1999 | 2 | 0 |
| 2000 | 1 | 0 |
| 2001 | 1 | 0 |
| 2002 | 0 | 1 |
| 2003 | 1 | 2 |
| 2004 | 2 | 1 |
| 2005 | 0 | 3 |
| 2006 | 0 | 1 |
| 2007 | 0 | 3 |
| 2008 | 2 | 2 |
| 2009 | 0 | 0 |
| 2010 | 2 | 5 |
| 2011 | 3 | 2 |
| 2012 | 6 | 5 |
| 2013 | 1 | 0 |
| 2014 | 3 | 6 |
| 2015 | 1 | 3 |
| 2016 | 2 | 4 |
| 2017 | 1 | 1 |
| 2018 | 2 | 2 |
| 2019 | 3 | 5 |
| 2020 | 5 | 9 |
| 2021 | 5 | 1 |
| 2022 | 2 | 2 |
| 2023 | 1 | 1 |
| 2024 | 2 | 2 |
| 2025 | 1 | 2 |
| 2026 | 1 | 1 |
By publication year. Applications have been published since 2001. 2026 runs to 8 Oct.
Recent patents
- Preparation capable of simultaneously removing NO, SO2 and HCl13 Jan 2026US 12,521,707 B2University of Science and Technology Beijing
- Noxious gas purificant and its preparation and purification method thereof25 Nov 2025US 12,478,945 B2
- Indoor and outdoor nano air purifier and system comprising said purifier16 Apr 2024US 11,959,662 B2Dirac Inc.
- Noxious gas purificant and its preparation and purification method thereof27 Feb 2024US 11,911,740 B2
- Photocatalytic filter and air conditioning device comprising photocatalytic filter21 Feb 2023US 11,585,546 B2Samsung Electronics Co., Ltd.
- Exhaust gas purification method and exhaust gas purification apparatus20 Aug 2026US 2026/0241339 A1Mitsubishi Heavy Industries, Ltd.
- Preparation method for activated coke catalyst capable of simultaneously removing no, so2 and hcl31 Jul 2025US 2025/0242341 A1University of Science and Technology Beijing
- Catalyst with regular structure and preparation method thereof and method for simultaneously reducing both sox and nox from flue gas8 May 2025US 2025/0144567 A1China Petroleum & Chemical Corporation
- Catalyst for reducing sox and nox in flue gas and preparation method thereof, and method for removing sox and nox from flue gas19 Dec 2024US 2024/0416327 A1China Petroleum & Chemical Corporation
- Noxious gas purificant and its preparation and purification method thereof4 Jan 2024US 2024/0001332 A1
Most cited
By later US patents
- Integrated injection and bag filter house system for SO.sub.x -NO.sub.x -particulate control with reagent/catalyst regeneration115US 4,793,981 AThe Babcock & Wilcox Company · 1988
- Exhaust purification device of internal combustion engine109US 5,473,890 AToyota Jidosha Kabushiki Kaisha · 1995
- Exhaust gas purification device for an engine103US 5,472,673 AToyota Jidosha Kabushiki Kaisha · 1995
- Microporous metal-plated polytetrafluoroethylene articles and method of manufacture63US 4,557,957 AW. L. Gore & Associates, Inc. · 1985
- Microporous metal-plated polytetrafluoroethylene articles and method of manufacture55US 4,720,400 AW. L. Gore & Associates, Inc. · 1988