F02P 15/08
Electric spark ignition having characteristics not provided for in, or of interest
Official title: having multiple-spark ignition, i.e. ignition occurring simultaneously at different places in one engine cylinder or in two or more separate engine cylinders
F02P15/08 (Electric spark ignition having characteristics not provided for in, or of interest) appears on 420 US grants and 312 published applications in this corpus.
Search patents in F02P- Granted patents
- 420
- Published applications
- 312
- Assignees
- 163
- Inventors
- 781
- Latest grant
- 23 Dec 2025
Filings by year
| Year | Granted patents | Published applications |
|---|---|---|
| 1976 | 1 | 0 |
| 1977 | 0 | 0 |
| 1978 | 0 | 0 |
| 1979 | 3 | 0 |
| 1980 | 1 | 0 |
| 1981 | 1 | 0 |
| 1982 | 1 | 0 |
| 1983 | 3 | 0 |
| 1984 | 4 | 0 |
| 1985 | 10 | 0 |
| 1986 | 4 | 0 |
| 1987 | 6 | 0 |
| 1988 | 6 | 0 |
| 1989 | 5 | 0 |
| 1990 | 5 | 0 |
| 1991 | 9 | 0 |
| 1992 | 8 | 0 |
| 1993 | 6 | 0 |
| 1994 | 4 | 0 |
| 1995 | 13 | 0 |
| 1996 | 8 | 0 |
| 1997 | 6 | 0 |
| 1998 | 8 | 0 |
| 1999 | 1 | 0 |
| 2000 | 7 | 0 |
| 2001 | 7 | 2 |
| 2002 | 9 | 8 |
| 2003 | 9 | 4 |
| 2004 | 8 | 10 |
| 2005 | 8 | 9 |
| 2006 | 8 | 11 |
| 2007 | 9 | 19 |
| 2008 | 13 | 7 |
| 2009 | 7 | 21 |
| 2010 | 15 | 14 |
| 2011 | 11 | 7 |
| 2012 | 8 | 14 |
| 2013 | 10 | 9 |
| 2014 | 6 | 20 |
| 2015 | 6 | 14 |
| 2016 | 18 | 16 |
| 2017 | 20 | 21 |
| 2018 | 17 | 23 |
| 2019 | 22 | 11 |
| 2020 | 19 | 12 |
| 2021 | 21 | 21 |
| 2022 | 21 | 15 |
| 2023 | 16 | 16 |
| 2024 | 9 | 4 |
| 2025 | 3 | 3 |
| 2026 | 0 | 1 |
By publication year. Applications have been published since 2001. 2026 runs to 8 Oct.
Recent patents
- Internal combustion engine23 Dec 2025US 12,503,992 B2Mitsubishi Heavy Industries Engine & Turbocharger, Ltd.
- Internal combustion engine with spark plug and prechamber spark plug12 Aug 2025US 12,385,446 B2Robert Bosch GmbH
- Method for igniting a motor vehicle combustion engine3 Jun 2025US 12,320,319 B2Vitesco Technologies GmbH
- Internal combustion engine19 Nov 2024US 12,146,450 B2Toyota Jidosha Kabushiki Kaisha
- Ignition coil control system3 Sep 2024US 12,080,998 B2Hyundai Motor Company
- Ignition system and control method19 Feb 2026US 2026/0049589 A1Clean Combustion Engine Technology Inc.
- System and method for misfire detection for dual spark plug engine31 Jul 2025US 2025/0244207 A1Fca US LLC
- Internal combustion engine22 May 2025US 2025/0163879 A1Mitsubishi Heavy Industries Engine & Turbocharger, Ltd.
- Method for igniting a motor vehicle combustion engine2 Jan 2025US 2025/0003379 A1Vitesco Technologies GmbH
- Internal Combustion Engine with Spark Plug and Prechamber Spark Plug11 Jul 2024US 2024/0229734 A9Robert Bosch GmbH
Most cited
By later US patents
- Electromagnetic ignition--an ignition system producing a large size and intense capacitive and inductive spark with an intense electromagnetic field feeding the spark160US 4,774,914 ACombustion Electromagnetics, Inc. · 1988
- Integrated converter high power CD ignition67US 5,207,208 ACombustion Electromagnetics, Inc. · 1993
- Internal combustion engine66US 5,207,058 AToyota Jidosha Kabushiki Kaisha · 1993
- Waste-spark engine ignition56US 6,189,522 B1Ngk Spark Plug Co., Ltd. · 2001
- Controller for internal combustion engine52US 6,425,371 B2Denso Corporation · 2002