F01N 3/225
Electric control of additional air supply
Official title: {Electric control of additional air supply}
F01N3/225 (Electric control of additional air supply) appears on 100 US grants and 98 published applications in this corpus.
Search patents in F01N- Granted patents
- 100
- Published applications
- 98
- Assignees
- 54
- Inventors
- 253
- Latest grant
- 21 Jul 2026
Filings by year
| Year | Granted patents | Published applications |
|---|---|---|
| 2003 | 3 | 1 |
| 2004 | 2 | 6 |
| 2005 | 3 | 2 |
| 2006 | 1 | 2 |
| 2007 | 3 | 2 |
| 2008 | 0 | 1 |
| 2009 | 1 | 3 |
| 2010 | 1 | 3 |
| 2011 | 2 | 1 |
| 2012 | 2 | 8 |
| 2013 | 2 | 2 |
| 2014 | 6 | 4 |
| 2015 | 7 | 5 |
| 2016 | 4 | 4 |
| 2017 | 3 | 6 |
| 2018 | 4 | 6 |
| 2019 | 4 | 8 |
| 2020 | 8 | 3 |
| 2021 | 6 | 6 |
| 2022 | 10 | 6 |
| 2023 | 9 | 6 |
| 2024 | 8 | 8 |
| 2025 | 9 | 4 |
| 2026 | 2 | 1 |
By publication year. 2026 runs to 8 Oct.
Recent patents
- Exhaust system and method of operating the same21 Jul 2026US 12,687,125 B1Saudi Arabian Oil Company
- Exhaust purification device20 Jan 2026US 12,528,049 B2Mazda Motor Corporation
- Internal combustion engine transient response18 Nov 2025US 12,473,867 B2Caterpillar Inc.
- Systems and methods for supplementing an ammonia heat-exchange unit for engine cooling with a radiator14 Oct 2025US 12,442,324 B1First Ammonia Motors, Inc.
- Method and device for diagnosing an air supply of an internal combustion engine7 Oct 2025US 12,435,656 B2Robert Bosch GmbH
- Engine exhaust gas purification apparatus11 Jun 2026US 2026/0160193 A1Mazda Motor Corporation
- Pre-heat system for upstream elements and catalysts of a selective catalytic reduction device9 Oct 2025US 2025/0314186 A1Safety Power Inc.
- Internal combustion engine transient response9 Oct 2025US 2025/0314212 A1Caterpillar Inc.
- Exhaust purification device28 Aug 2025US 2025/0269326 A1Mazda Motor Corporation
- Vehicle3 Apr 2025US 2025/0109727 A1Kawasaki Motors, Ltd.
Most cited
By later US patents
- Emissions control13US 6,799,422 B2Westerbeke Corporation · 2004
- Abnormality diagnosing apparatus for vehicle12US 6,904,792 B2Denso Corporation · 2005
- Adaptive engine control for low emission vehicle starting10US 6,666,021 B1Ford Global Technologies, LLC · 2003
- Engine control for low emission vehicle starting9US 7,293,406 B2Ford Global Technologies, LLC · 2007
- Secondary air supply system and secondary air supply method8US 6,978,600 B2Toyota Jidosha Kabushiki Kaisha · 2005