F02P 23/045
Using electromagnetic microwaves
Official title: {using electromagnetic microwaves}
F02P23/045 (Using electromagnetic microwaves) appears on 160 US grants and 183 published applications in this corpus.
Search patents in F02P- Granted patents
- 160
- Published applications
- 183
- Assignees
- 60
- Inventors
- 243
- Latest grant
- 3 Mar 2026
Filings by year
| Year | Granted patents | Published applications |
|---|---|---|
| 1976 | 1 | 0 |
| 1977 | 0 | 0 |
| 1978 | 0 | 0 |
| 1979 | 1 | 0 |
| 1980 | 0 | 0 |
| 1981 | 1 | 0 |
| 1982 | 0 | 0 |
| 1983 | 1 | 0 |
| 1984 | 1 | 0 |
| 1985 | 0 | 0 |
| 1986 | 0 | 0 |
| 1987 | 0 | 0 |
| 1988 | 1 | 0 |
| 1989 | 0 | 0 |
| 1990 | 0 | 0 |
| 1991 | 0 | 0 |
| 1992 | 0 | 0 |
| 1993 | 0 | 0 |
| 1994 | 1 | 0 |
| 1995 | 0 | 0 |
| 1996 | 0 | 0 |
| 1997 | 2 | 0 |
| 1998 | 1 | 0 |
| 1999 | 0 | 0 |
| 2000 | 1 | 0 |
| 2001 | 0 | 0 |
| 2002 | 1 | 1 |
| 2003 | 2 | 0 |
| 2004 | 0 | 2 |
| 2005 | 1 | 0 |
| 2006 | 0 | 3 |
| 2007 | 3 | 1 |
| 2008 | 1 | 0 |
| 2009 | 0 | 8 |
| 2010 | 4 | 13 |
| 2011 | 1 | 10 |
| 2012 | 10 | 14 |
| 2013 | 13 | 12 |
| 2014 | 19 | 38 |
| 2015 | 4 | 14 |
| 2016 | 19 | 14 |
| 2017 | 23 | 21 |
| 2018 | 24 | 12 |
| 2019 | 4 | 7 |
| 2020 | 10 | 7 |
| 2021 | 5 | 2 |
| 2022 | 1 | 2 |
| 2023 | 2 | 1 |
| 2024 | 1 | 1 |
| 2025 | 0 | 0 |
| 2026 | 1 | 0 |
By publication year. Applications have been published since 2001. 2026 runs to 8 Oct.
Recent patents
- Pre-chamber ignition system and procedure for an internal combustion engine3 Mar 2026US 12,565,850 B2Marelli Europe S.P.A.
- Plasma assisted spark ignition systems and methods12 Mar 2024US 11,929,595 B2Transient Plasma Systems, Inc.
- Focused microwave or radio frequency ignition and plasma generation21 Feb 2023US 11,585,312 B1Southwest Research Institute
- Corona ignition device with improved electrical performance17 Jan 2023US 11,557,882 B2Tenneco Inc.
- Combustion environment diagnostics22 Nov 2022US 11,506,169 B2West Virginia University
- Pre-Chamber Ignition System and Procedure for an Internal Combustion Engine15 Feb 2024US 2024/0052772 A1Marelli Europe S.P.A.
- Focused Microwave or Radio Frequency Ignition and Plasma Generation16 Mar 2023US 2023/0083067 A1Southwest Research Institute
- Plasma Assisted Spark Ignition Systems and Methods20 Oct 2022US 2022/0337036 A1Transient Plasma Systems, Inc.
- Ignition unit and motorized product17 Mar 2022US 2022/0082074 A1
- Corona ignition device with improved electrical performance18 Nov 2021US 2021/0359494 A1Tenneco 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
- Ignition methods and apparatus using microwave and laser energy99US 5,845,480 AUnison Industries Limited Partnership · 1998
- Combustion in an internal combustion engine71US 3,934,566 A1976
- Radio frequency coaxial cavity resonator as an ignition source and associated method61US 5,361,737 AWest Virginia University · 1994
- Ignition methods and apparatus using microwave energy45US 5,673,554 ASimmonds Precision Engine Systems, Inc. · 1997