F01N 3/34
Using air conduits or jet air pumps
Official title: using air conduits or jet air pumps, e.g. near the engine exhaust port
F01N3/34 (Using air conduits or jet air pumps) appears on 218 US grants and 114 published applications in this corpus.
Search patents in F01N- Granted patents
- 218
- Published applications
- 114
- Assignees
- 106
- Inventors
- 455
- Latest grant
- 19 Aug 2025
Filings by year
| Year | Granted patents | Published applications |
|---|---|---|
| 1976 | 20 | 0 |
| 1977 | 4 | 0 |
| 1978 | 3 | 0 |
| 1979 | 7 | 0 |
| 1980 | 12 | 0 |
| 1981 | 3 | 0 |
| 1982 | 4 | 0 |
| 1983 | 6 | 0 |
| 1984 | 8 | 0 |
| 1985 | 3 | 0 |
| 1986 | 5 | 0 |
| 1987 | 1 | 0 |
| 1988 | 1 | 0 |
| 1989 | 2 | 0 |
| 1990 | 1 | 0 |
| 1991 | 1 | 0 |
| 1992 | 2 | 0 |
| 1993 | 2 | 0 |
| 1994 | 4 | 0 |
| 1995 | 7 | 0 |
| 1996 | 4 | 0 |
| 1997 | 6 | 0 |
| 1998 | 7 | 0 |
| 1999 | 6 | 0 |
| 2000 | 3 | 0 |
| 2001 | 6 | 0 |
| 2002 | 2 | 4 |
| 2003 | 1 | 3 |
| 2004 | 5 | 5 |
| 2005 | 3 | 4 |
| 2006 | 1 | 3 |
| 2007 | 2 | 6 |
| 2008 | 1 | 7 |
| 2009 | 3 | 7 |
| 2010 | 3 | 10 |
| 2011 | 2 | 3 |
| 2012 | 9 | 4 |
| 2013 | 10 | 5 |
| 2014 | 2 | 4 |
| 2015 | 8 | 5 |
| 2016 | 6 | 3 |
| 2017 | 2 | 6 |
| 2018 | 1 | 3 |
| 2019 | 3 | 0 |
| 2020 | 5 | 10 |
| 2021 | 4 | 8 |
| 2022 | 9 | 2 |
| 2023 | 2 | 5 |
| 2024 | 1 | 1 |
| 2025 | 5 | 2 |
| 2026 | 0 | 4 |
By publication year. Applications have been published since 2001. 2026 runs to 8 Oct.
Recent patents
- Vehicle with gasoline particulate filter soot regeneration strategy with criteria emission reduction for low NOX emissions19 Aug 2025US 12,392,300 B1GM Global Technology Operations LLC
- Directed secondary air supply into the exhaust tract of an internal combustion engine22 Jul 2025US 12,366,192 B2Vitesco Technologies GmbH
- Off-road vehicle and engine thereof8 Apr 2025US 12,270,360 B2Zhejiang CFMOTO Power Co., Ltd.
- Combustion engine for a motor vehicle, in particular for a car, and motor vehicle11 Mar 2025US 12,247,513 B2Mercedes-Benz Group AG
- Upper structure of engine28 Jan 2025US 12,209,528 B1Suzuki Motor Corporation
- 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
- Vehicle with a heat management group of exhaust gases28 May 2026US 2026/0146550 A1
- Additional propulsion method and system for a vehicle28 May 2026US 2026/0146553 A1
- Vehicle3 Apr 2025US 2025/0109727 A1Kawasaki Motors, Ltd.
Most cited
By later US patents
- Intermittent time controlled vapor dispensing device97US 3,993,444 A1976
- Diagnostics and control of an on board hydrogen generation and delivery system93US 5,964,089 ALynntech, Inc. · 1999
- Combination catalytic converter and muffler for an exhaust system53US 4,209,493 ANelson Industries, Inc. · 1980
- Combination muffler and catalytic converter45US 5,338,903 ABriggs & Stratton Corporation · 1994
- Secondary air regulating system41US 3,962,867 ANissan Motor Co., Ltd. · 1976