B01D 2258/01
Engine exhaust gases
B01D2258/01 (Engine exhaust gases) appears on 1,953 US grants and 2,742 published applications in this corpus.
Search patents in B01D- Granted patents
- 1,953
- Published applications
- 2,742
- Assignees
- 751
- Inventors
- 4,766
- Latest grant
- 6 Oct 2026
Filings by year
| Year | Granted patents | Published applications |
|---|---|---|
| 1978 | 1 | 0 |
| 1979 | 0 | 0 |
| 1980 | 2 | 0 |
| 1981 | 1 | 0 |
| 1982 | 0 | 0 |
| 1983 | 5 | 0 |
| 1984 | 1 | 0 |
| 1985 | 1 | 0 |
| 1986 | 0 | 0 |
| 1987 | 0 | 0 |
| 1988 | 5 | 0 |
| 1989 | 0 | 0 |
| 1990 | 4 | 0 |
| 1991 | 1 | 0 |
| 1992 | 2 | 0 |
| 1993 | 3 | 0 |
| 1994 | 4 | 0 |
| 1995 | 5 | 0 |
| 1996 | 6 | 0 |
| 1997 | 12 | 0 |
| 1998 | 20 | 0 |
| 1999 | 15 | 0 |
| 2000 | 17 | 0 |
| 2001 | 13 | 10 |
| 2002 | 16 | 19 |
| 2003 | 15 | 19 |
| 2004 | 24 | 33 |
| 2005 | 21 | 45 |
| 2006 | 22 | 40 |
| 2007 | 20 | 49 |
| 2008 | 26 | 67 |
| 2009 | 29 | 150 |
| 2010 | 39 | 165 |
| 2011 | 70 | 133 |
| 2012 | 107 | 100 |
| 2013 | 118 | 97 |
| 2014 | 93 | 125 |
| 2015 | 118 | 137 |
| 2016 | 102 | 130 |
| 2017 | 120 | 126 |
| 2018 | 98 | 132 |
| 2019 | 117 | 127 |
| 2020 | 96 | 130 |
| 2021 | 117 | 128 |
| 2022 | 102 | 140 |
| 2023 | 103 | 178 |
| 2024 | 85 | 204 |
| 2025 | 112 | 134 |
| 2026 | 65 | 124 |
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
- Air conditioning and filtration system29 Sep 2026US 12,746,502 B2Work Air Technologies Pty Ltd
- Multi-layer TWC formulations with optimalized PGM loadings29 Sep 2026US 12,746,510 B2Johnson Matthey Public Limited Company
- Method for manufacturing exhaust gas purification catalyst29 Sep 2026US 12,746,538 B2Cataler Corporation
- Exhaust gas aftertreatment system with two SCR catalysts29 Sep 2026US 12,747,686 B1FEV Group GmbH
- Exhaust purification device8 Oct 2026US 2026/0307009 A1Mazda Motor Corporation
- System for treating an exhaust gas8 Oct 2026US 2026/0307052 A1Johnson Matthey Public Limited Company
- Method for producing fe-doped beta zeolite catalyst monoliths8 Oct 2026US 2026/0307064 A1BASF SE
- Catalytic article comprising vanadium-containing catalyst and oxidation catalyst8 Oct 2026US 2026/0307065 A1
- Complete oxidation catalysts for dilute alkanes1 Oct 2026US 2026/0295521 A1Icarus Technology LLC
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
- Low emission, diesel-cycle engine158US 6,470,682 B2The United States of America as represented by the Administrator of the United States Environmental Protection Agency · 2002
- NOx decreasing apparatus for an internal combustion engine153US 5,412,946 AKabushiki Kaisha Toyota Chuo Kenkyusho · 1995
- Low emission, diesel-cycle engine146US 6,301,888 B1The United States of America as represented by the Administrator of the Environmental Protection Agency · 2001
- Catalyzed SCR filter and emission treatment system132US 7,229,597 B2BASFD Catalysts LLC · 2007