F02D 41/1477
Characterised by the regulation circuit or part of it
Official title: {characterised by the regulation circuit or part of it,(e.g. comparator, PI regulator, output)}
F02D41/1477 (Characterised by the regulation circuit or part of it) appears on 731 US grants and 238 published applications in this corpus.
Search patents in F02D- Granted patents
- 731
- Published applications
- 238
- Assignees
- 150
- Inventors
- 1,142
- Latest grant
- 10 Dec 2024
Filings by year
| Year | Granted patents | Published applications |
|---|---|---|
| 1976 | 8 | 0 |
| 1977 | 12 | 0 |
| 1978 | 37 | 0 |
| 1979 | 32 | 0 |
| 1980 | 27 | 0 |
| 1981 | 22 | 0 |
| 1982 | 17 | 0 |
| 1983 | 16 | 0 |
| 1984 | 21 | 0 |
| 1985 | 21 | 0 |
| 1986 | 10 | 0 |
| 1987 | 21 | 0 |
| 1988 | 22 | 0 |
| 1989 | 21 | 0 |
| 1990 | 23 | 0 |
| 1991 | 22 | 0 |
| 1992 | 19 | 0 |
| 1993 | 14 | 0 |
| 1994 | 18 | 0 |
| 1995 | 15 | 0 |
| 1996 | 20 | 0 |
| 1997 | 13 | 0 |
| 1998 | 25 | 0 |
| 1999 | 11 | 0 |
| 2000 | 9 | 0 |
| 2001 | 14 | 6 |
| 2002 | 12 | 13 |
| 2003 | 16 | 18 |
| 2004 | 20 | 26 |
| 2005 | 17 | 15 |
| 2006 | 27 | 15 |
| 2007 | 8 | 11 |
| 2008 | 8 | 9 |
| 2009 | 11 | 7 |
| 2010 | 6 | 2 |
| 2011 | 6 | 12 |
| 2012 | 3 | 7 |
| 2013 | 4 | 13 |
| 2014 | 8 | 4 |
| 2015 | 14 | 11 |
| 2016 | 10 | 14 |
| 2017 | 15 | 9 |
| 2018 | 9 | 10 |
| 2019 | 12 | 12 |
| 2020 | 14 | 12 |
| 2021 | 10 | 2 |
| 2022 | 1 | 6 |
| 2023 | 7 | 1 |
| 2024 | 3 | 1 |
| 2025 | 0 | 2 |
By publication year. Applications have been published since 2001.
Subgroups
Granted patents
Recent patents
- Sensor system, and sensor system failure detecting method10 Dec 2024US 12,163,917 B2Niterra Co., Ltd.
- Engine control device23 Jul 2024US 12,044,189 B2Toyota Jidosha Kabushiki Kaisha
- Communication interface between an emission control system and internal combustion engine2 Jan 2024US 11,859,573 B2Applied Resonance Technology LLC
- Systems and methods for air-fuel ratio imbalance monitor15 Aug 2023US 11,725,603 B1Ford Global Technologies, LLC
- Electronic control method for throttle and electronic control throttle device8 Aug 2023US 11,719,171 B2Nikki Co., Ltd.
- Control circuitry of internal combustion engine and motorcycle25 Sep 2025US 2025/0297583 A1Kawasaki Motors, Ltd.
- Apparatus and method for lambda control of spark-ignition engines, and motor vehicle22 May 2025US 2025/0163864 A1Audi AG
- Engine control device2 May 2024US 2024/0141848 A1Toyota Jidosha Kabushiki Kaisha
- Systems and methods for air-fuel ratio imbalance monitor7 Sep 2023US 2023/0279820 A1Ford Global Technologies, LLC
- Electronic control method for throttle and electronic control throttle device29 Sep 2022US 2022/0307429 A1Nikki Co., Ltd.
Most cited
By later US patents
- Internal combustion engine control for improved fuel efficiency208US 7,577,511 B1Tula Technology, Inc. · 2009
- Exhaust gas control using a spark plug ionization signal198US 6,980,903 B2Visteon Global Technologies, Inc. · 2005
- Method and apparatus for monitoring and adjusting .lambda.-probe-controlled catalytic exhaust gas emission control systems of internal combustion engines114US 4,622,809 ADaimler-Benz Aktiengesellschaft · 1986
- Air-fuel ratio control system for internal combustion engines and exhaust system temperature-estimating device applicable thereto101US 5,678,402 AHonda Giken Kogyo Kabushiki Kaisha · 1997
- Internal combustion engine control for improved fuel efficiency97US 8,131,447 B2Tula Technology, Inc. · 2012