F02P 2017/125
Measuring ionisation of combustion gas
Official title: {Measuring ionisation of combustion gas, e.g. by using ignition circuits}
F02P2017/125 (Measuring ionisation of combustion gas) appears on 353 US grants and 188 published applications in this corpus.
Search patents in F02P- Granted patents
- 353
- Published applications
- 188
- Assignees
- 112
- Inventors
- 453
- Latest grant
- 24 Dec 2024
Filings by year
| Year | Granted patents | Published applications |
|---|---|---|
| 1976 | 1 | 0 |
| 1977 | 3 | 0 |
| 1978 | 1 | 0 |
| 1979 | 1 | 0 |
| 1980 | 2 | 0 |
| 1981 | 3 | 0 |
| 1982 | 2 | 0 |
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| 1992 | 6 | 0 |
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| 1994 | 25 | 0 |
| 1995 | 19 | 0 |
| 1996 | 15 | 0 |
| 1997 | 10 | 0 |
| 1998 | 9 | 0 |
| 1999 | 9 | 0 |
| 2000 | 9 | 0 |
| 2001 | 12 | 1 |
| 2002 | 14 | 12 |
| 2003 | 8 | 12 |
| 2004 | 12 | 20 |
| 2005 | 14 | 10 |
| 2006 | 12 | 3 |
| 2007 | 5 | 9 |
| 2008 | 8 | 9 |
| 2009 | 6 | 16 |
| 2010 | 10 | 8 |
| 2011 | 5 | 11 |
| 2012 | 8 | 5 |
| 2013 | 9 | 5 |
| 2014 | 2 | 2 |
| 2015 | 7 | 6 |
| 2016 | 4 | 5 |
| 2017 | 5 | 9 |
| 2018 | 6 | 11 |
| 2019 | 11 | 11 |
| 2020 | 10 | 5 |
| 2021 | 11 | 6 |
| 2022 | 8 | 10 |
| 2023 | 4 | 0 |
| 2024 | 3 | 0 |
| 2025 | 0 | 2 |
By publication year. Applications have been published since 2001.
Subgroups
Granted patents
Recent patents
- Ignition system and method controlling spark ignited combustion engines24 Dec 2024US 12,173,678 B2Sem AB
- Electronic device to control an ignition coil of an internal combustion engine and electronic ignition system thereof for detecting a misfire in the internal combustion engine26 Mar 2024US 11,939,944 B2Eldor Corporation S.P.A.
- System and method for controlling ignition coil23 Jan 2024US 11,879,420 B1Hyundai Motor Company
- Combustion apparatus that combusts fuel12 Sep 2023US 11,754,010 B2Save the Planet Co., Ltd.
- Electronic device and control system of an ignition coil in an internal combustion engine29 Aug 2023US 11,739,722 B2Eldor Corporation S.P.A.
- System and method for misfire detection for dual spark plug engine31 Jul 2025US 2025/0244207 A1Fca US LLC
- Engine combustion control system26 Jun 2025US 2025/0207552 A1Mazda Motor Corporation
- Internal Combustion Engine Control Device and Ignition Device13 Oct 2022US 2022/0325687 A1Hitachi Astemo, Ltd.
- Combustion apparatus that combusts fuel15 Sep 2022US 2022/0290625 A1Save the Planet Co., Ltd.
- Electronic device and control system of an ignition coil in an internal combustion engine1 Sep 2022US 2022/0275783 A1Eldor Corporation S.P.A.
Most cited
By later US patents
- Exhaust gas control using a spark plug ionization signal198US 6,980,903 B2Visteon Global Technologies, Inc. · 2005
- Method and apparatus for detecting ion current in an internal combustion engine ignition system95US 4,648,367 ASaab-Scania Aktiebolog · 1987
- Method and apparatus for detecting ionization signal in diesel and dual mode engines with plasma discharge system68US 6,994,073 B2Woodward Governor Company · 2006
- Apparatus and method for controlling air/fuel ratio using ionization measurements66US 6,029,627 AAdrenaline Research, Inc. · 2000
- System and method for reducing knock and preignition in an internal combustion engine65US 7,533,651 B2Ford Global Technologies, LLC · 2009