F01N 3/32
Using air pump
Official title: using air pump (using jet air pumps F01N3/34; pumps in general F04)
F01N3/32 (Using air pump) appears on 440 US grants and 349 published applications in this corpus.
Search patents in F01N- Granted patents
- 440
- Published applications
- 349
- Assignees
- 172
- Inventors
- 1,097
- Latest grant
- 28 Jul 2026
Filings by year
| Year | Granted patents | Published applications |
|---|---|---|
| 1976 | 7 | 0 |
| 1977 | 1 | 0 |
| 1978 | 3 | 0 |
| 1979 | 0 | 0 |
| 1980 | 4 | 0 |
| 1981 | 2 | 0 |
| 1982 | 1 | 0 |
| 1983 | 2 | 0 |
| 1984 | 2 | 0 |
| 1985 | 2 | 0 |
| 1986 | 0 | 0 |
| 1987 | 3 | 0 |
| 1988 | 1 | 0 |
| 1989 | 1 | 0 |
| 1990 | 1 | 0 |
| 1991 | 0 | 0 |
| 1992 | 5 | 0 |
| 1993 | 4 | 0 |
| 1994 | 8 | 0 |
| 1995 | 24 | 0 |
| 1996 | 13 | 0 |
| 1997 | 14 | 0 |
| 1998 | 20 | 0 |
| 1999 | 13 | 0 |
| 2000 | 10 | 0 |
| 2001 | 10 | 4 |
| 2002 | 6 | 9 |
| 2003 | 9 | 17 |
| 2004 | 8 | 26 |
| 2005 | 17 | 19 |
| 2006 | 16 | 22 |
| 2007 | 10 | 20 |
| 2008 | 7 | 10 |
| 2009 | 9 | 11 |
| 2010 | 6 | 15 |
| 2011 | 14 | 12 |
| 2012 | 8 | 14 |
| 2013 | 7 | 13 |
| 2014 | 18 | 20 |
| 2015 | 18 | 8 |
| 2016 | 9 | 12 |
| 2017 | 11 | 14 |
| 2018 | 9 | 12 |
| 2019 | 8 | 9 |
| 2020 | 13 | 19 |
| 2021 | 12 | 11 |
| 2022 | 23 | 16 |
| 2023 | 23 | 21 |
| 2024 | 18 | 9 |
| 2025 | 8 | 4 |
| 2026 | 2 | 2 |
By publication year. Applications have been published since 2001. 2026 runs to 8 Oct.
Subgroups
Granted patents
Recent patents
- 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
- Internal combustion engine for a motor vehicle, in particular for a motor car9 Sep 2025US 12,410,744 B2Mercedes-Benz Group AG
- 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
- Exhaust system, controller and method for an internal combustion engine5 Aug 2025US 12,378,905 B2Jaguar Land Rover Limited
- Exhaust purification device8 Oct 2026US 2026/0307009 A1Mazda Motor Corporation
- Nozzle designs for secondary air injection in exhaust aftertreatment systems with electrical heaters9 Jul 2026US 2026/0194000 A1Corning Incorporated
- Systems and methods for zero nox emissions during an operating period30 Oct 2025US 2025/0334091 A1Cummins Inc.
- Pre-heat system for upstream elements and catalysts of a selective catalytic reduction device9 Oct 2025US 2025/0314186 A1Safety Power Inc.
- Exhaust purification device28 Aug 2025US 2025/0269326 A1Mazda Motor Corporation
Most cited
By later US patents
- Energy management system for hybrid vehicle125US 5,345,761 AFord Motor Company · 1994
- Engine exhaust gas purification device108US 5,551,231 AToyota Jidosha Kabushiki Kaisha · 1996
- Method for monitoring the performance of a no.sub.x trap101US 5,743,084 AFord Global Technologies, LLC · 1998
- Method and apparatus for maintaining catalyst efficiency of a NO.sub.x trap96US 5,832,722 AFord Global Technologies, LLC · 1998
- Diagnostics and control of an on board hydrogen generation and delivery system93US 5,964,089 ALynntech, Inc. · 1999