F01N 3/00
Exhaust or silencing apparatus having means for purifying, rendering innocuous, or otherwise
Official title: Exhaust or silencing apparatus having means for purifying, rendering innocuous, or otherwise treating exhaust (electric control F01N9/00; monitoring or diagnostic devices for exhaust-gas treatment apparatus F01N11/00)
F01N3/00 (Exhaust or silencing apparatus having means for purifying, rendering innocuous, or otherwise) appears on 19,310 US grants and 19,459 published applications in this corpus.
Search patents in F01N- Granted patents
- 19,310
- Published applications
- 19,459
- Assignees
- 2,883
- Inventors
- 25,549
- Latest grant
- 6 Oct 2026
Filings by year
| Year | Granted patents | Published applications |
|---|---|---|
| 1976 | 178 | 0 |
| 1977 | 93 | 0 |
| 1978 | 119 | 0 |
| 1979 | 92 | 0 |
| 1980 | 98 | 0 |
| 1981 | 96 | 0 |
| 1982 | 82 | 0 |
| 1983 | 81 | 0 |
| 1984 | 81 | 0 |
| 1985 | 70 | 0 |
| 1986 | 67 | 0 |
| 1987 | 89 | 0 |
| 1988 | 66 | 0 |
| 1989 | 118 | 0 |
| 1990 | 109 | 0 |
| 1991 | 138 | 0 |
| 1992 | 162 | 0 |
| 1993 | 173 | 0 |
| 1994 | 159 | 0 |
| 1995 | 242 | 0 |
| 1996 | 185 | 0 |
| 1997 | 182 | 0 |
| 1998 | 267 | 0 |
| 1999 | 247 | 0 |
| 2000 | 232 | 0 |
| 2001 | 300 | 134 |
| 2002 | 288 | 390 |
| 2003 | 317 | 483 |
| 2004 | 359 | 605 |
| 2005 | 345 | 543 |
| 2006 | 388 | 638 |
| 2007 | 346 | 748 |
| 2008 | 323 | 797 |
| 2009 | 401 | 934 |
| 2010 | 536 | 930 |
| 2011 | 556 | 946 |
| 2012 | 745 | 779 |
| 2013 | 804 | 875 |
| 2014 | 836 | 978 |
| 2015 | 937 | 1093 |
| 2016 | 852 | 1039 |
| 2017 | 983 | 1093 |
| 2018 | 858 | 1110 |
| 2019 | 1076 | 1004 |
| 2020 | 962 | 974 |
| 2021 | 901 | 807 |
| 2022 | 835 | 804 |
| 2023 | 683 | 599 |
| 2024 | 549 | 473 |
| 2025 | 496 | 384 |
| 2026 | 208 | 299 |
By publication year. Applications have been published since 2001. 2026 runs to 8 Oct.
Subgroups
Granted patents
- F01N 3/08Exhaust or silencing apparatus having means for purifying, rendering innocuous, or otherwise15,741
- F01N 3/02Exhaust or silencing apparatus having means for purifying, rendering innocuous, or otherwise7,905
- F01N 3/005Exhaust or silencing apparatus having means for purifying, rendering innocuous, or otherwise225
- F01N 3/01Exhaust or silencing apparatus having means for purifying, rendering innocuous, or otherwise198
- F01N 3/06Exhaust or silencing apparatus having means for purifying, rendering innocuous, or otherwise84
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
- Exhaust heat recovery device8 Oct 2026US 2026/0309067 A1
- Containerized ultra-low nox diesel engine generator set with roof-mounted selective catalytic reduction system8 Oct 2026US 2026/0309075 A1Industrial Service Solutions WC, Inc.
Most cited
By later US patents
- Remote power recharge for electronic equipment421US 7,068,991 B22006
- Diesel particulate trap330US 4,329,162 ACorning Glass Works · 1982
- Radio frequency process sensing, control, and diagnostics network and system267US 10,118,119 B2CTS Corporation · 2018
- Device for removal of contaminants from fluid streams235US 5,750,026 ACorning Incorporated · 1998
- Hybrid vehicles228US 6,554,088 B2Paice LLC · 2003