F02P 3/051
Opening or closing the primary coil circuit with semiconductor devices
Official title: {Opening or closing the primary coil circuit with semiconductor devices}
F02P3/051 (Opening or closing the primary coil circuit with semiconductor devices) appears on 291 US grants and 169 published applications in this corpus.
Search patents in F02P- Granted patents
- 291
- Published applications
- 169
- Assignees
- 111
- Inventors
- 410
- Latest grant
- 16 Sep 2025
Filings by year
| Year | Granted patents | Published applications |
|---|---|---|
| 1976 | 2 | 0 |
| 1977 | 4 | 0 |
| 1978 | 13 | 0 |
| 1979 | 7 | 0 |
| 1980 | 3 | 0 |
| 1981 | 6 | 0 |
| 1982 | 3 | 0 |
| 1983 | 10 | 0 |
| 1984 | 8 | 0 |
| 1985 | 6 | 0 |
| 1986 | 1 | 0 |
| 1987 | 2 | 0 |
| 1988 | 4 | 0 |
| 1989 | 1 | 0 |
| 1990 | 6 | 0 |
| 1991 | 4 | 0 |
| 1992 | 7 | 0 |
| 1993 | 2 | 0 |
| 1994 | 5 | 0 |
| 1995 | 3 | 0 |
| 1996 | 4 | 0 |
| 1997 | 6 | 0 |
| 1998 | 5 | 0 |
| 1999 | 2 | 0 |
| 2000 | 5 | 0 |
| 2001 | 4 | 1 |
| 2002 | 5 | 6 |
| 2003 | 5 | 4 |
| 2004 | 12 | 26 |
| 2005 | 13 | 10 |
| 2006 | 16 | 5 |
| 2007 | 4 | 2 |
| 2008 | 3 | 7 |
| 2009 | 0 | 1 |
| 2010 | 8 | 2 |
| 2011 | 1 | 1 |
| 2012 | 0 | 2 |
| 2013 | 1 | 7 |
| 2014 | 3 | 7 |
| 2015 | 4 | 1 |
| 2016 | 9 | 11 |
| 2017 | 8 | 10 |
| 2018 | 11 | 15 |
| 2019 | 12 | 12 |
| 2020 | 13 | 10 |
| 2021 | 17 | 15 |
| 2022 | 8 | 5 |
| 2023 | 5 | 5 |
| 2024 | 7 | 1 |
| 2025 | 3 | 3 |
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
- Method for igniting a motor vehicle combustion engine3 Jun 2025US 12,320,319 B2Vitesco Technologies GmbH
- Control device for internal combustion engine6 May 2025US 12,292,023 B2Hitachi Astemo, Ltd.
- Ignition system and method controlling spark ignited combustion engines24 Dec 2024US 12,173,678 B2Sem AB
- Igniter26 Nov 2024US 12,155,180 B2Diamond&Zebra Electric Mfg. Co., Ltd.
- Ignition coil and ignition device20 Nov 2025US 2025/0354533 A1Diamond&Zebra Electric Mfg. Co., Ltd.
- Ignition coil25 Sep 2025US 2025/0299875 A1Diamond&Zebra Electric Mfg. Co., Ltd.
- Method for igniting a motor vehicle combustion engine2 Jan 2025US 2025/0003379 A1Vitesco Technologies GmbH
- Ignition apparatus and control method thereof23 May 2024US 2024/0167446 A1Hyundai Motor Company
- Ignition device7 Dec 2023US 2023/0392571 A1Diamond&Zebra Electric Mfg. Co., Ltd.
Most cited
By later US patents
- Exhaust gas control using a spark plug ionization signal198US 6,980,903 B2Visteon Global Technologies, Inc. · 2005
- Compensation circuit for an automotive ignition sensing system165US 6,392,315 B1Delphi Technologies, Inc. · 2002
- Internal combustion engine ignition system44US 3,945,362 AGeneral Motors Corporation · 1976
- Optimal wide open throttle air/fuel ratio control39US 7,137,382 B2Visteon Global Technologies, Inc. · 2006
- Ignition system for an internal combustion engine38US 4,502,454 ANissan Motor Co., Ltd. · 1985