F02P 3/0884
Closing the discharge circuit of the storage capacitor with semiconductor devices
Official title: {Closing the discharge circuit of the storage capacitor with semiconductor devices}
F02P3/0884 (Closing the discharge circuit of the storage capacitor with semiconductor devices) appears on 142 US grants and 44 published applications in this corpus.
Search patents in F02P- Granted patents
- 142
- Published applications
- 44
- Assignees
- 64
- Inventors
- 209
- Latest grant
- 2 Dec 2025
Filings by year
| Year | Granted patents | Published applications |
|---|---|---|
| 1976 | 7 | 0 |
| 1977 | 2 | 0 |
| 1978 | 2 | 0 |
| 1979 | 5 | 0 |
| 1980 | 4 | 0 |
| 1981 | 1 | 0 |
| 1982 | 2 | 0 |
| 1983 | 1 | 0 |
| 1984 | 2 | 0 |
| 1985 | 2 | 0 |
| 1986 | 6 | 0 |
| 1987 | 6 | 0 |
| 1988 | 4 | 0 |
| 1989 | 5 | 0 |
| 1990 | 8 | 0 |
| 1991 | 6 | 0 |
| 1992 | 3 | 0 |
| 1993 | 8 | 0 |
| 1994 | 1 | 0 |
| 1995 | 6 | 0 |
| 1996 | 3 | 0 |
| 1997 | 0 | 0 |
| 1998 | 1 | 0 |
| 1999 | 1 | 0 |
| 2000 | 6 | 0 |
| 2001 | 1 | 0 |
| 2002 | 1 | 2 |
| 2003 | 6 | 2 |
| 2004 | 2 | 2 |
| 2005 | 0 | 1 |
| 2006 | 3 | 0 |
| 2007 | 0 | 2 |
| 2008 | 0 | 1 |
| 2009 | 1 | 0 |
| 2010 | 2 | 1 |
| 2011 | 0 | 0 |
| 2012 | 1 | 3 |
| 2013 | 1 | 2 |
| 2014 | 1 | 2 |
| 2015 | 2 | 3 |
| 2016 | 4 | 1 |
| 2017 | 2 | 11 |
| 2018 | 9 | 5 |
| 2019 | 5 | 2 |
| 2020 | 4 | 0 |
| 2021 | 2 | 2 |
| 2022 | 1 | 1 |
| 2023 | 1 | 0 |
| 2024 | 0 | 1 |
| 2025 | 1 | 0 |
By publication year. Applications have been published since 2001.
Subgroups
Granted patents
Recent patents
- Engine ignition systems and control methods therefor2 Dec 2025US 12,486,822 B2Hamilton Sundstrand Corporation
- Electronic circuit and capacitor discharge system comprising electronic circuit24 Jan 2023US 11,560,869 B2Sem AB
- Engine ignition control unit for improved engine starting5 Jul 2022US 11,378,053 B2Walbro Corporation
- Ignition device of internal combustion engine20 Jul 2021US 11,067,051 B2Denso Corporation
- Control and communication module for light-duty combustion engine23 Mar 2021US 10,954,911 B2Walbro Corporation
- Engine ignition systems and control methods therefor13 Jun 2024US 2024/0191681 A1Hamilton Sundstrand Corporation
- Electronic circuit and capacitor discharge system comprising electronic circuit11 Aug 2022US 2022/0252034 A1Sem AB
- Engine ignition control unit for improved engine starting19 Aug 2021US 2021/0254593 A1Walbro Corporation
- Ignition device of internal combustion engine18 Mar 2021US 2021/0079880 A1Denso Corporation
- Control and communication module for light-duty combustion engine22 Aug 2019US 2019/0257280 A1Walbro Corporation
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
- Multi spark ignition system95US 4,922,883 AAisin Seiki Kabushiki Kaisha · 1990
- High efficiency voltage doubling ignition coil for CD system producing pulsed plasma type ignition92US 4,677,960 ACombustion Electromagnetics, Inc. · 1987
- Optimized high power high energy ignition system88US 5,456,241 ACombustion Electromagnetics, Inc. · 1995