F02P 15/04
One of the spark electrodes being mounted on the engine working piston
Official title: one of the spark electrodes being mounted on the engine working piston
F02P15/04 (One of the spark electrodes being mounted on the engine working piston) appears on 47 US grants and 31 published applications in this corpus.
Search patents in F02P- Granted patents
- 47
- Published applications
- 31
- Assignees
- 23
- Inventors
- 69
- Latest grant
- 12 Aug 2025
Filings by year
| Year | Granted patents | Published applications |
|---|---|---|
| 1977 | 1 | 0 |
| 1978 | 0 | 0 |
| 1979 | 0 | 0 |
| 1980 | 0 | 0 |
| 1981 | 1 | 0 |
| 1982 | 1 | 0 |
| 1983 | 0 | 0 |
| 1984 | 0 | 0 |
| 1985 | 0 | 0 |
| 1986 | 0 | 0 |
| 1987 | 0 | 0 |
| 1988 | 1 | 0 |
| 1989 | 2 | 0 |
| 1990 | 0 | 0 |
| 1991 | 0 | 0 |
| 1992 | 0 | 0 |
| 1993 | 0 | 0 |
| 1994 | 2 | 0 |
| 1995 | 2 | 0 |
| 1996 | 2 | 0 |
| 1997 | 1 | 0 |
| 1998 | 2 | 0 |
| 1999 | 0 | 0 |
| 2000 | 0 | 0 |
| 2001 | 0 | 0 |
| 2002 | 1 | 0 |
| 2003 | 1 | 2 |
| 2004 | 1 | 1 |
| 2005 | 1 | 0 |
| 2006 | 0 | 0 |
| 2007 | 1 | 0 |
| 2008 | 1 | 3 |
| 2009 | 1 | 4 |
| 2010 | 1 | 1 |
| 2011 | 1 | 1 |
| 2012 | 2 | 2 |
| 2013 | 1 | 0 |
| 2014 | 2 | 8 |
| 2015 | 0 | 2 |
| 2016 | 5 | 1 |
| 2017 | 4 | 2 |
| 2018 | 4 | 0 |
| 2019 | 2 | 1 |
| 2020 | 1 | 0 |
| 2021 | 0 | 1 |
| 2022 | 0 | 0 |
| 2023 | 1 | 0 |
| 2024 | 0 | 2 |
| 2025 | 1 | 0 |
By publication year. Applications have been published since 2001.
Recent patents
- Internal combustion engine with spark plug and prechamber spark plug12 Aug 2025US 12,385,446 B2Robert Bosch GmbH
- Piston discharge structure for plasma cloud excitation engine3 Oct 2023US 11,773,816 B2Beijing Bdh Laser Science & Technology Inc. Ltd.
- In-combustion chamber flow control device21 Apr 2020US 10,626,786 B2Mazda Motor Corporation
- Ignition device for an extraneously igniting combustion piston engine3 Dec 2019US 10,495,046 B2
- Internal combustion engines29 Oct 2019US 10,458,323 B2Cox Powertrain Limited
- Internal Combustion Engine with Spark Plug and Prechamber Spark Plug11 Jul 2024US 2024/0229734 A9Robert Bosch GmbH
- Internal Combustion Engine with Spark Plug and Prechamber Spark Plug25 Apr 2024US 2024/0133350 A1Robert Bosch GmbH
- Piston discharge structure for plasma cloud excitation engine2 Dec 2021US 2021/0372358 A1Beijing Bdh Laser Science & Technology Inc. Ltd.
- In-combustion chamber flow control device16 May 2019US 2019/0145307 A1Mazda Motor Corporation
- Ignition unit, ignition system, and internal combustion engine16 Nov 2017US 2017/0328337 A1Imagineering, Inc.
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
- System and method for generating and sustaining a corona electric discharge for igniting a combustible gaseous mixture64US 6,883,507 B2Etatech, Inc. · 2005
- Plasma ceramic coating to supply uniform sparking action in combustion engines58US 4,330,732 APurification Sciences Inc. · 1982
- Internal plasma-combustion engine system16US 5,423,306 A1995
- Internal combustion engine10US 5,503,133 A1996