B01D 53/922
Mixtures of carbon monoxide or hydrocarbons and nitrogen oxides
Official title: {Mixtures of carbon monoxide or hydrocarbons and nitrogen oxides}
B01D53/922 (Mixtures of carbon monoxide or hydrocarbons and nitrogen oxides) appears on 76 US grants and 87 published applications in this corpus.
Search patents in B01D- Granted patents
- 76
- Published applications
- 87
- Assignees
- 47
- Inventors
- 192
- Latest grant
- 17 Jan 2023
Filings by year
| Year | Granted patents | Published applications |
|---|---|---|
| 1976 | 2 | 0 |
| 1977 | 1 | 0 |
| 1978 | 0 | 0 |
| 1979 | 0 | 0 |
| 1980 | 0 | 0 |
| 1981 | 2 | 0 |
| 1982 | 1 | 0 |
| 1983 | 0 | 0 |
| 1984 | 0 | 0 |
| 1985 | 0 | 0 |
| 1986 | 0 | 0 |
| 1987 | 0 | 0 |
| 1988 | 0 | 0 |
| 1989 | 0 | 0 |
| 1990 | 0 | 0 |
| 1991 | 0 | 0 |
| 1992 | 0 | 0 |
| 1993 | 1 | 0 |
| 1994 | 3 | 0 |
| 1995 | 2 | 0 |
| 1996 | 3 | 0 |
| 1997 | 2 | 0 |
| 1998 | 3 | 0 |
| 1999 | 2 | 0 |
| 2000 | 0 | 0 |
| 2001 | 0 | 0 |
| 2002 | 0 | 3 |
| 2003 | 0 | 2 |
| 2004 | 2 | 2 |
| 2005 | 1 | 0 |
| 2006 | 0 | 1 |
| 2007 | 2 | 1 |
| 2008 | 0 | 2 |
| 2009 | 2 | 6 |
| 2010 | 0 | 8 |
| 2011 | 2 | 2 |
| 2012 | 1 | 1 |
| 2013 | 2 | 4 |
| 2014 | 3 | 6 |
| 2015 | 6 | 6 |
| 2016 | 5 | 5 |
| 2017 | 3 | 3 |
| 2018 | 3 | 9 |
| 2019 | 8 | 4 |
| 2020 | 5 | 7 |
| 2021 | 4 | 8 |
| 2022 | 4 | 6 |
| 2023 | 1 | 1 |
By publication year. Applications have been published since 2001.
Subgroups
Granted patents
Recent patents
- Exhaust gas treatment by thermal diffusion17 Jan 2023US 11,555,434 B1Saudi Arabian Oil Company
- Catalytic articles18 Oct 2022US 11,471,863 B2BASF SE
- Electrochemical reactor14 Jun 2022US 11,358,095 B2Toyota Jidosha Kabushiki Kaisha
- Diesel oxidation catalyst and exhaust system24 May 2022US 11,338,245 B2Johnson Matthey Public Limited Company
- Electrochemical reactor10 May 2022US 11,325,067 B2Toyota Jidosha Kabushiki Kaisha
- Diesel oxidation catalyst with enhanced hydrocarbon light-off properties23 Nov 2023US 2023/0372905 A1BASF SE
- Exhaust gas purification catalyst, method of purifying exhaust gas, and method of manufacturing exhaust gas purification catalyst8 Sep 2022US 2022/0280921 A1Umicore Shokubai Japan Co., Ltd.
- Exhaust gas processing system and method1 Sep 2022US 2022/0275739 A1Shanghai Bixiufu Enterprise Management Co., Ltd.
- Engine exhaust gas treatment system and method11 Aug 2022US 2022/0251993 A1Shanghai Bixiufu Enterprise Management Co., Ltd.
- Exhaust treatment system and method24 Feb 2022US 2022/0054974 A1Shanghai Bixiufu Enterprise Management Co., Ltd.
Most cited
By later US patents
- System for purifying exhaust gas65US 5,464,458 A1995
- Plasma injector, exhaust gas purifying system and method for injecting reducing agent43US 7,481,043 B2Toyota Jidosha Kabushiki Kaisha · 2009
- Internal combustion engine exhaust treating apparatus and method31US 5,857,324 A1999
- Gasoline engine emissions treatment systems having particulate traps29US 8,173,087 B2BASF SE · 2012
- Oxidation catalyst for treating the exhaust gas of a compression ignition engine25US 9,034,286 B2Johnson Matthey Public Limited Company · 2015