F02P 9/007
By supplementary electrical discharge in the pre-ionised electrode interspace of the sparking
Official title: {by supplementary electrical discharge in the pre-ionised electrode interspace of the sparking plug, e.g. plasma jet ignition}
F02P9/007 (By supplementary electrical discharge in the pre-ionised electrode interspace of the sparking) appears on 463 US grants and 380 published applications in this corpus.
Search patents in F02P- Granted patents
- 463
- Published applications
- 380
- Assignees
- 151
- Inventors
- 643
- Latest grant
- 3 Mar 2026
Filings by year
| Year | Granted patents | Published applications |
|---|---|---|
| 1976 | 6 | 0 |
| 1977 | 5 | 0 |
| 1978 | 4 | 0 |
| 1979 | 3 | 0 |
| 1980 | 2 | 0 |
| 1981 | 7 | 0 |
| 1982 | 9 | 0 |
| 1983 | 16 | 0 |
| 1984 | 10 | 0 |
| 1985 | 9 | 0 |
| 1986 | 3 | 0 |
| 1987 | 3 | 0 |
| 1988 | 5 | 0 |
| 1989 | 4 | 0 |
| 1990 | 2 | 0 |
| 1991 | 3 | 0 |
| 1992 | 1 | 0 |
| 1993 | 9 | 0 |
| 1994 | 3 | 0 |
| 1995 | 4 | 0 |
| 1996 | 7 | 0 |
| 1997 | 6 | 0 |
| 1998 | 6 | 0 |
| 1999 | 1 | 0 |
| 2000 | 6 | 0 |
| 2001 | 3 | 1 |
| 2002 | 5 | 4 |
| 2003 | 5 | 2 |
| 2004 | 4 | 7 |
| 2005 | 3 | 4 |
| 2006 | 4 | 2 |
| 2007 | 4 | 7 |
| 2008 | 7 | 10 |
| 2009 | 2 | 16 |
| 2010 | 8 | 18 |
| 2011 | 10 | 17 |
| 2012 | 11 | 17 |
| 2013 | 15 | 15 |
| 2014 | 27 | 36 |
| 2015 | 12 | 32 |
| 2016 | 30 | 35 |
| 2017 | 37 | 52 |
| 2018 | 45 | 32 |
| 2019 | 24 | 21 |
| 2020 | 27 | 12 |
| 2021 | 15 | 14 |
| 2022 | 11 | 11 |
| 2023 | 8 | 3 |
| 2024 | 7 | 5 |
| 2025 | 4 | 4 |
| 2026 | 1 | 3 |
By publication year. Applications have been published since 2001. 2026 runs to 8 Oct.
Recent patents
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- Control device for internal combustion engine6 May 2025US 12,292,023 B2Hitachi Astemo, Ltd.
- High-energy remote chamber ignition system29 Apr 2025US 12,286,952 B1
- Plasma ignition and combustion assist system for gas turbine engines25 Feb 2025US 12,234,774 B2
- Traveling spark igniter5 Mar 2026US 2026/0066621 A1Champion Aerospace Inc.
- Ignition coil and ignition device26 Feb 2026US 2026/0058054 A1Diamond&Zebra Electric Mfg. Co., Ltd.
- Ignition system and control method19 Feb 2026US 2026/0049589 A1Clean Combustion Engine Technology Inc.
- Method and device for controlling an internal combustion engine18 Dec 2025US 2025/0382937 A1
- Ignition coil and ignition device20 Nov 2025US 2025/0354533 A1Diamond&Zebra Electric Mfg. Co., Ltd.
Most cited
By later US patents
- Ignition system power converter and controller203US 5,558,071 ACombustion Electromagnetics, Inc. · 1996
- Enhanced flame ignition for hydrocarbon fuels134US 4,841,925 ACombustion Electromagnetics, Inc. · 1989
- Plasma igniter for internal combustion engine112US 4,122,816 AThe United States of America as represented by the Administrator of the National Aeronautics and Space Administration · 1978
- High efficiency voltage doubling ignition coil for CD system producing pulsed plasma type ignition92US 4,677,960 ACombustion Electromagnetics, Inc. · 1987
- Miniature railgun engine ignitor92US 5,211,142 ABoard of Regents, The University of Texas System · 1993