F01N 3/30
Arrangements for supply of additional air
Official title: Arrangements for supply of additional air (control, e.g. using by-passes or variable air pump drives, F01N3/22)
F01N3/30 (Arrangements for supply of additional air) appears on 1,074 US grants and 789 published applications in this corpus.
Search patents in F01N- Granted patents
- 1,074
- Published applications
- 789
- Assignees
- 360
- Inventors
- 2,291
- Latest grant
- 25 Aug 2026
Filings by year
| Year | Granted patents | Published applications |
|---|---|---|
| 1976 | 32 | 0 |
| 1977 | 9 | 0 |
| 1978 | 11 | 0 |
| 1979 | 12 | 0 |
| 1980 | 19 | 0 |
| 1981 | 10 | 0 |
| 1982 | 7 | 0 |
| 1983 | 12 | 0 |
| 1984 | 11 | 0 |
| 1985 | 7 | 0 |
| 1986 | 7 | 0 |
| 1987 | 9 | 0 |
| 1988 | 4 | 0 |
| 1989 | 10 | 0 |
| 1990 | 9 | 0 |
| 1991 | 7 | 0 |
| 1992 | 13 | 0 |
| 1993 | 15 | 0 |
| 1994 | 20 | 0 |
| 1995 | 43 | 0 |
| 1996 | 27 | 0 |
| 1997 | 37 | 0 |
| 1998 | 43 | 0 |
| 1999 | 27 | 0 |
| 2000 | 18 | 0 |
| 2001 | 23 | 7 |
| 2002 | 14 | 18 |
| 2003 | 19 | 26 |
| 2004 | 15 | 39 |
| 2005 | 27 | 43 |
| 2006 | 22 | 39 |
| 2007 | 20 | 40 |
| 2008 | 11 | 34 |
| 2009 | 20 | 35 |
| 2010 | 24 | 42 |
| 2011 | 23 | 36 |
| 2012 | 27 | 28 |
| 2013 | 31 | 25 |
| 2014 | 35 | 37 |
| 2015 | 38 | 31 |
| 2016 | 31 | 22 |
| 2017 | 22 | 36 |
| 2018 | 21 | 24 |
| 2019 | 20 | 26 |
| 2020 | 27 | 41 |
| 2021 | 38 | 37 |
| 2022 | 42 | 40 |
| 2023 | 41 | 39 |
| 2024 | 40 | 21 |
| 2025 | 21 | 13 |
| 2026 | 3 | 10 |
By publication year. Applications have been published since 2001. 2026 runs to 8 Oct.
Subgroups
Granted patents
Recent patents
- Emissions management for diesel series hybrid powertrains25 Aug 2026US 12,715,426 B2Cummins Inc.
- Method for operating a burner of a motor vehicle28 Jul 2026US 12,692,806 B2Mercedes-Benz Group AG
- Exhaust purification device20 Jan 2026US 12,528,049 B2Mazda Motor Corporation
- Three-way catalytic converter and device for processing tail gas16 Dec 2025US 12,497,914 B2Shanghai Fusion Tech Co., Ltd.
- Internal combustion engine for a motor vehicle, in particular for a motor car9 Sep 2025US 12,410,744 B2Mercedes-Benz Group AG
- Exhaust purification device8 Oct 2026US 2026/0307009 A1Mazda Motor Corporation
- Engine system having recuperated catalyst in exhaust system and method20 Aug 2026US 2026/0243186 A1Caterpillar Inc.
- Manifold Module, Engine, And Construction Machinery20 Aug 2026US 2026/0243187 A1Caterpillar Inc.
- Feeding and exhaust system for internal combustion engine, or thermal unit, and respective method of operation13 Aug 2026US 2026/0235064 A1Rhapis S.R.L.
- Secondary Air Valve for a Secondary Air System of an Internal Combustion Engine, Internal Combustion Engine and Motor Vehicle30 Jul 2026US 2026/0218643 A1Mercedes-Benz Group AG
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
- Energy management system for hybrid vehicle125US 5,345,761 AFord Motor Company · 1994
- Device for purifying exhaust gas of engine114US 6,014,859 AToyota Jidosha Kabushiki Kaisha · 2000
- Arrangement for the aftertreatment of exhaust gases112US 5,605,042 ARobert Bosch GmbH · 1997