F01N 3/0885
Regeneration of deteriorated absorbents or adsorbents
Official title: {Regeneration of deteriorated absorbents or adsorbents, e.g. desulfurization of NOx traps}
F01N3/0885 (Regeneration of deteriorated absorbents or adsorbents) appears on 455 US grants and 479 published applications in this corpus.
Search patents in F01N- Granted patents
- 455
- Published applications
- 479
- Assignees
- 137
- Inventors
- 945
- Latest grant
- 29 Sep 2026
Filings by year
| Year | Granted patents | Published applications |
|---|---|---|
| 1977 | 1 | 0 |
| 1978 | 0 | 0 |
| 1979 | 0 | 0 |
| 1980 | 0 | 0 |
| 1981 | 0 | 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 | 0 | 0 |
| 1994 | 0 | 0 |
| 1995 | 3 | 0 |
| 1996 | 3 | 0 |
| 1997 | 3 | 0 |
| 1998 | 3 | 0 |
| 1999 | 5 | 0 |
| 2000 | 10 | 0 |
| 2001 | 17 | 8 |
| 2002 | 9 | 10 |
| 2003 | 13 | 22 |
| 2004 | 20 | 33 |
| 2005 | 18 | 23 |
| 2006 | 22 | 24 |
| 2007 | 16 | 23 |
| 2008 | 10 | 34 |
| 2009 | 14 | 48 |
| 2010 | 24 | 28 |
| 2011 | 27 | 14 |
| 2012 | 27 | 13 |
| 2013 | 20 | 8 |
| 2014 | 17 | 14 |
| 2015 | 13 | 17 |
| 2016 | 13 | 28 |
| 2017 | 20 | 32 |
| 2018 | 29 | 24 |
| 2019 | 26 | 21 |
| 2020 | 17 | 11 |
| 2021 | 11 | 5 |
| 2022 | 7 | 12 |
| 2023 | 15 | 11 |
| 2024 | 6 | 5 |
| 2025 | 10 | 9 |
| 2026 | 5 | 2 |
By publication year. Applications have been published since 2001. 2026 runs to 8 Oct.
Recent patents
- Desulfurization method29 Sep 2026US 12,747,685 B2Subaru Corporation
- Systems including a hydrogen internal combustion engine and aftertreatment system1 Sep 2026US 12,723,528 B2Cummins Emission Solutions Inc.
- Systems and methods to assess state-of-health of an exhaust gas constituent capture device28 Jul 2026US 12,692,811 B2Cummins Inc.
- Purification system21 Jul 2026US 12,687,123 B2Isuzu Motors Limited
- Exhaust gas treatment system and method10 Feb 2026US 12,544,716 B2SodaFlexx Distribution LLP
- Systems and methods for treatment of gas engine exhaust23 Apr 2026US 2026/0110259 A1Ceco Environmental IP Inc.
- Exhaust gas treatment system and method26 Mar 2026US 2026/0084105 A1SodaFlexx Distribution LLP
- Exhaust gas treatment system, absorbing liquid management apparatus and treatment method of exhaust gas11 Dec 2025US 2025/0376935 A1Mitsubishi Heavy Industries, Ltd.
- Exhaust gas processing equipment and gas turbine plant13 Nov 2025US 2025/0347238 A1Mitsubishi Heavy Industries, Ltd.
- Systems including a hydrogen internal combustion engine and aftertreatment system2 Oct 2025US 2025/0305431 A1Cummins Emission Solutions Inc.
Most cited
By later US patents
- Exhaust gas purification device for an internal combustion engine197US 5,974,791 AToyota Jidosha Kabushiki Kaisha · 1999
- Apparatus and method for internal combustion engine control173US 5,657,625 AMitsubishi Jidosha Kogyo Kabushiki Kaisha · 1997
- Apparatus, method, and system for concentrating adsorbable pollutants and abatement thereof119US 6,105,365 AEngelhard Corporation · 2000
- Device for purifying exhaust gas of engine114US 6,014,859 AToyota Jidosha Kabushiki Kaisha · 2000
- Method and apparatus for desulfating a NO.sub.x trap101US 5,758,493 AFord Global Technologies, LLC · 1998