F01N 3/08
Exhaust or silencing apparatus having means for purifying, rendering innocuous, or otherwise
Official title: for rendering innocuous (using electric or electrostatic separators F01N3/01; chemical aspects B01D53/92)
F01N3/08 (Exhaust or silencing apparatus having means for purifying, rendering innocuous, or otherwise) appears on 15,741 US grants and 15,859 published applications in this corpus.
Search patents in F01N- Granted patents
- 15,741
- Published applications
- 15,859
- Assignees
- 2,346
- Inventors
- 21,209
- Latest grant
- 6 Oct 2026
Filings by year
| Year | Granted patents | Published applications |
|---|---|---|
| 1976 | 162 | 0 |
| 1977 | 89 | 0 |
| 1978 | 110 | 0 |
| 1979 | 84 | 0 |
| 1980 | 78 | 0 |
| 1981 | 74 | 0 |
| 1982 | 62 | 0 |
| 1983 | 60 | 0 |
| 1984 | 46 | 0 |
| 1985 | 35 | 0 |
| 1986 | 36 | 0 |
| 1987 | 46 | 0 |
| 1988 | 41 | 0 |
| 1989 | 64 | 0 |
| 1990 | 64 | 0 |
| 1991 | 84 | 0 |
| 1992 | 123 | 0 |
| 1993 | 130 | 0 |
| 1994 | 136 | 0 |
| 1995 | 207 | 0 |
| 1996 | 153 | 0 |
| 1997 | 160 | 0 |
| 1998 | 231 | 0 |
| 1999 | 212 | 0 |
| 2000 | 196 | 0 |
| 2001 | 274 | 117 |
| 2002 | 245 | 328 |
| 2003 | 272 | 391 |
| 2004 | 294 | 474 |
| 2005 | 275 | 392 |
| 2006 | 290 | 473 |
| 2007 | 245 | 524 |
| 2008 | 234 | 585 |
| 2009 | 290 | 693 |
| 2010 | 414 | 741 |
| 2011 | 403 | 732 |
| 2012 | 580 | 605 |
| 2013 | 627 | 704 |
| 2014 | 672 | 826 |
| 2015 | 772 | 926 |
| 2016 | 716 | 890 |
| 2017 | 836 | 918 |
| 2018 | 731 | 968 |
| 2019 | 918 | 851 |
| 2020 | 807 | 824 |
| 2021 | 765 | 684 |
| 2022 | 721 | 701 |
| 2023 | 586 | 514 |
| 2024 | 473 | 417 |
| 2025 | 433 | 331 |
| 2026 | 185 | 250 |
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
- Engine device6 Oct 2026US 12,753,713 B2Yanmar Holdings Co., Ltd.
- Mixing tube for exhaust system and operating strategy for same6 Oct 2026US 12,753,714 B2Caterpillar Inc.
- Layered tri-metallic catalytic article and method of manufacturing the catalytic article29 Sep 2026US 12,746,532 B2BASF Mobile Emissions Catalysts LLC
- Exhaust gas purification device and method for manufacturing exhaust gas purification device29 Sep 2026US 12,746,533 B2Cataler Corporation
- 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
- Pressurized systems and methods for providing a nebulized catalyst8 Oct 2026US 2026/0309066 A1Jake Vernon LLC
- Containerized ultra-low nox diesel engine generator set with roof-mounted selective catalytic reduction system8 Oct 2026US 2026/0309075 A1Industrial Service Solutions WC, Inc.
- Atmospheric steam desorption for direct air capture1 Oct 2026US 2026/0295505 A1Climeworks AG
Most cited
By later US patents
- Remote power recharge for electronic equipment421US 7,068,991 B22006
- Device for removal of contaminants from fluid streams235US 5,750,026 ACorning Incorporated · 1998
- Hybrid vehicles228US 6,554,088 B2Paice LLC · 2003
- Treatment of diesel exhaust gases207US 4,902,487 AJohnson Matthey PLC · 1990
- Method and apparatus for reducing nitrogen oxides from internal combustion engine207US 5,272,871 AKabushiki Kaisha Toyota Chuo Kenkyusho · 1993