F01N 3/0828
Characterised by the absorbed or adsorbed substances
Official title: {characterised by the absorbed or adsorbed substances}
F01N3/0828 (Characterised by the absorbed or adsorbed substances) appears on 2,550 US grants and 2,570 published applications in this corpus.
Search patents in F01N- Granted patents
- 2,550
- Published applications
- 2,570
- Assignees
- 472
- Inventors
- 3,956
- Latest grant
- 6 Oct 2026
Filings by year
| Year | Granted patents | Published applications |
|---|---|---|
| 1976 | 2 | 0 |
| 1977 | 2 | 0 |
| 1978 | 0 | 0 |
| 1979 | 1 | 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 | 3 | 0 |
| 1991 | 2 | 0 |
| 1992 | 6 | 0 |
| 1993 | 8 | 0 |
| 1994 | 8 | 0 |
| 1995 | 27 | 0 |
| 1996 | 24 | 0 |
| 1997 | 33 | 0 |
| 1998 | 52 | 0 |
| 1999 | 52 | 0 |
| 2000 | 55 | 0 |
| 2001 | 102 | 44 |
| 2002 | 113 | 125 |
| 2003 | 94 | 148 |
| 2004 | 126 | 150 |
| 2005 | 107 | 103 |
| 2006 | 101 | 126 |
| 2007 | 78 | 121 |
| 2008 | 62 | 120 |
| 2009 | 66 | 137 |
| 2010 | 87 | 101 |
| 2011 | 81 | 89 |
| 2012 | 100 | 68 |
| 2013 | 74 | 97 |
| 2014 | 89 | 74 |
| 2015 | 91 | 105 |
| 2016 | 71 | 114 |
| 2017 | 118 | 151 |
| 2018 | 105 | 154 |
| 2019 | 136 | 116 |
| 2020 | 106 | 118 |
| 2021 | 117 | 98 |
| 2022 | 92 | 67 |
| 2023 | 62 | 57 |
| 2024 | 43 | 38 |
| 2025 | 36 | 27 |
| 2026 | 17 | 22 |
By publication year. Applications have been published since 2001. 2026 runs to 8 Oct.
Subgroups
Granted patents
Recent patents
- Exhaust gas purification catalyst6 Oct 2026US 12,752,237 B2Cataler Corporation
- Desulfurization method29 Sep 2026US 12,747,685 B2Subaru Corporation
- Portable carbon capture system15 Sep 2026US 12,736,002 B2Qatar University
- Systems including a hydrogen internal combustion engine and aftertreatment system1 Sep 2026US 12,723,528 B2Cummins Emission Solutions Inc.
- Catalyzed soot filter with reduced ammonia oxidation1 Sep 2026US 12,723,531 B2BASF Mobile Emissions Catalysts LLC
- Atmospheric steam desorption for direct air capture1 Oct 2026US 2026/0295505 A1Climeworks AG
- Catalytic materials comprising fe-containing zeolitic material for the treatment of an exhaust gas1 Oct 2026US 2026/0295569 A1
- Systems, methods, and apparatuses for adsorbing carbon from engine exhaust gases1 Oct 2026US 2026/0298120 A1CO2 Filter, LLC
- Tractor24 Sep 2026US 2026/0286874 A1Kubota Corporation
- Aqueous composition having improved properties for the treatment of exhaust gases10 Sep 2026US 2026/0266209 A1Totalenergies Onetech
Most cited
By later US patents
- Method and apparatus for reducing nitrogen oxides from internal combustion engine207US 5,272,871 AKabushiki Kaisha Toyota Chuo Kenkyusho · 1993
- Exhaust purification device of internal combustion engine199US 5,473,887 AToyota Jidosha Kabushiki Kaisha · 1995
- Exhaust gas purification device for an internal combustion engine197US 5,974,791 AToyota Jidosha Kabushiki Kaisha · 1999
- Method and apparatus for desulfating a no.sub.x trap176US 5,974,788 AFord Global Technologies, LLC · 1999
- Apparatus and method for internal combustion engine control173US 5,657,625 AMitsubishi Jidosha Kogyo Kabushiki Kaisha · 1997