F02P 3/0552
Opening or closing the primary coil circuit with semiconductor devices
Official title: {Opening or closing the primary coil circuit with semiconductor devices}
F02P3/0552 (Opening or closing the primary coil circuit with semiconductor devices) appears on 184 US grants and 88 published applications in this corpus.
Search patents in F02P- Granted patents
- 184
- Published applications
- 88
- Assignees
- 64
- Inventors
- 270
- Latest grant
- 16 Sep 2025
Filings by year
| Year | Granted patents | Published applications |
|---|---|---|
| 1976 | 4 | 0 |
| 1977 | 4 | 0 |
| 1978 | 10 | 0 |
| 1979 | 1 | 0 |
| 1980 | 4 | 0 |
| 1981 | 6 | 0 |
| 1982 | 3 | 0 |
| 1983 | 2 | 0 |
| 1984 | 2 | 0 |
| 1985 | 1 | 0 |
| 1986 | 1 | 0 |
| 1987 | 0 | 0 |
| 1988 | 1 | 0 |
| 1989 | 3 | 0 |
| 1990 | 7 | 0 |
| 1991 | 3 | 0 |
| 1992 | 4 | 0 |
| 1993 | 4 | 0 |
| 1994 | 6 | 0 |
| 1995 | 5 | 0 |
| 1996 | 8 | 0 |
| 1997 | 9 | 0 |
| 1998 | 3 | 0 |
| 1999 | 2 | 0 |
| 2000 | 2 | 0 |
| 2001 | 3 | 1 |
| 2002 | 5 | 3 |
| 2003 | 4 | 3 |
| 2004 | 4 | 3 |
| 2005 | 2 | 1 |
| 2006 | 2 | 5 |
| 2007 | 1 | 2 |
| 2008 | 3 | 3 |
| 2009 | 1 | 3 |
| 2010 | 3 | 1 |
| 2011 | 1 | 3 |
| 2012 | 1 | 2 |
| 2013 | 2 | 5 |
| 2014 | 0 | 3 |
| 2015 | 6 | 4 |
| 2016 | 7 | 10 |
| 2017 | 6 | 10 |
| 2018 | 11 | 7 |
| 2019 | 2 | 7 |
| 2020 | 6 | 3 |
| 2021 | 11 | 5 |
| 2022 | 3 | 2 |
| 2023 | 3 | 1 |
| 2024 | 1 | 1 |
| 2025 | 1 | 0 |
By publication year. Applications have been published since 2001.
Subgroups
Granted patents
Recent patents
- Method and apparatus to control an ignition system16 Sep 2025US 12,416,282 B2BorgWarner Luxembourg Automotive Systems SA
- Ignition device for an internal combustion engine22 Oct 2024US 12,123,385 B2Robert Bosch GmbH
- Ignition apparatus for internal combustion engine5 Sep 2023US 11,746,737 B2Denso Corporation
- Ignition drive module, ignition drive circuit and ignition control system16 May 2023US 11,649,796 B2Kunshan Cadic Auto Electric Co Ltd
- Ignition device for internal combustion engine9 May 2023US 11,644,003 B2Denso Corporation
- Ignition device for an internal combustion engine21 Mar 2024US 2024/0093664 A1Robert Bosch GmbH
- Method and apparatus to control an ignition system9 Nov 2023US 2023/0358200 A1BorgWarner Luxembourg Automotive Systems SA
- Ignition Drive Module, Ignition Drive Circuit and Ignition Control System11 Aug 2022US 2022/0252035 A1Kunshan Cadic Auto Electric Co Ltd
- Ignition device for internal combustion engine28 Apr 2022US 2022/0128024 A1Denso Corporation
- Ignition apparatus16 Dec 2021US 2021/0388806 A1Mitsubishi Electric Corporation
Most cited
By later US patents
- Electronic ignition system47US 3,937,193 AFord Motor Company · 1976
- Short-circuit-proof transistor output stage, especially ignition output stage for motor vehicles47US 5,559,661 ARobert Bosch GmbH · 1996
- Diagnostic circuit for units providing current control and protection against excessive heat dissipation for semiconductor power devices28US 5,008,771 ASGS-Thomson Microelectronics S.A. · 1991
- Electronic ignition system exhibiting efficient energy usage26US 4,149,508 A1979
- Circuit device for igniting internal combustion engine and semiconductor device for igniting internal combustion engine26US 5,970,964 AFuji Electric Co., Ltd. · 1999