F01N 2250/12
Absorption or adsorption, and catalytic conversion
Official title: absorption or adsorption, and catalytic conversion
F01N2250/12 (Absorption or adsorption, and catalytic conversion) appears on 419 US grants and 222 published applications in this corpus.
Search patents in F01N- Granted patents
- 419
- Published applications
- 222
- Assignees
- 142
- Inventors
- 882
- Latest grant
- 21 Jul 2026
Filings by year
| Year | Granted patents | Published applications |
|---|---|---|
| 1976 | 1 | 0 |
| 1977 | 2 | 0 |
| 1978 | 1 | 0 |
| 1979 | 2 | 0 |
| 1980 | 0 | 0 |
| 1981 | 0 | 0 |
| 1982 | 1 | 0 |
| 1983 | 1 | 0 |
| 1984 | 0 | 0 |
| 1985 | 1 | 0 |
| 1986 | 0 | 0 |
| 1987 | 0 | 0 |
| 1988 | 0 | 0 |
| 1989 | 0 | 0 |
| 1990 | 3 | 0 |
| 1991 | 2 | 0 |
| 1992 | 6 | 0 |
| 1993 | 5 | 0 |
| 1994 | 9 | 0 |
| 1995 | 22 | 0 |
| 1996 | 26 | 0 |
| 1997 | 29 | 0 |
| 1998 | 35 | 0 |
| 1999 | 32 | 0 |
| 2000 | 24 | 0 |
| 2001 | 20 | 5 |
| 2002 | 12 | 10 |
| 2003 | 6 | 12 |
| 2004 | 16 | 15 |
| 2005 | 11 | 25 |
| 2006 | 13 | 9 |
| 2007 | 10 | 13 |
| 2008 | 6 | 6 |
| 2009 | 7 | 8 |
| 2010 | 6 | 8 |
| 2011 | 3 | 9 |
| 2012 | 7 | 8 |
| 2013 | 4 | 3 |
| 2014 | 7 | 3 |
| 2015 | 4 | 4 |
| 2016 | 6 | 9 |
| 2017 | 9 | 9 |
| 2018 | 6 | 4 |
| 2019 | 4 | 14 |
| 2020 | 11 | 7 |
| 2021 | 6 | 15 |
| 2022 | 10 | 10 |
| 2023 | 10 | 7 |
| 2024 | 14 | 6 |
| 2025 | 7 | 3 |
| 2026 | 2 | 0 |
By publication year. Applications have been published since 2001. 2026 runs to 8 Oct.
Recent patents
- Purification system21 Jul 2026US 12,687,123 B2Isuzu Motors Limited
- Adsorbent, its preparation and use3 Feb 2026US 12,539,502 B2City University of Hong Kong
- Mixed zeolite-containing SCR catalyst12 Aug 2025US 12,383,890 B2BASF Mobile Emissions Catalysts LLC
- Platinum and zinc-containing zeolite15 Jul 2025US 12,357,977 B2Umicore AG & Co. KG
- Exhaust gas after-treatment device and propulsion system including the device1 Apr 2025US 12,264,611 B2Fpt Industrial S.P.A.
- Purification system28 Aug 2025US 2025/0270947 A1Isuzu Motors Limited
- Dual leg aftertreatment system19 Jun 2025US 2025/0198322 A1Cummins Power Generation Inc.
- Adsorbent, its preparation and use12 Jun 2025US 2025/0186968 A1City University of Hong Kong
- Method for Operating an Internal Combustion Engine, a System for Carrying Out the Method and an Internal Combustion Engine19 Dec 2024US 2024/0418112 A1Keyou GmbH
- Exhaust gas after-treatment device and propulsion system including the device3 Oct 2024US 2024/0328336 A1Fpt Industrial S.P.A.
Most cited
By later US patents
- Apparatus and method for internal combustion engine control173US 5,657,625 AMitsubishi Jidosha Kogyo Kabushiki Kaisha · 1997
- Method and apparatus for treating an engine exhaust gas stream154US 6,171,556 B2Engelhard Corporation · 2001
- Exhaust gas purification apparatus for an internal combustion engine149US 5,402,641 AToyota Jidosha Kabushiki Kaisha · 1995
- Exhaust gas purification system for low emission vehicle147US 6,167,696 AFord Motor Company · 2001
- Method for purifying exhaust gas of a diesel engine146US 5,746,989 AToyota Jidosha Kabushiki Kaisha · 1998