H01T 13/22
Having two or more electrodes embedded in insulation
Official title: having two or more electrodes embedded in insulation (sparking plugs having two or more spark gaps H01T13/46)
H01T13/22 (Having two or more electrodes embedded in insulation) appears on 34 US grants and 38 published applications in this corpus.
Search patents in H01T- Granted patents
- 34
- Published applications
- 38
- Assignees
- 25
- Inventors
- 71
- Latest grant
- 25 Feb 2025
Filings by year
| Year | Granted patents | Published applications |
|---|---|---|
| 1977 | 1 | 0 |
| 1978 | 1 | 0 |
| 1979 | 0 | 0 |
| 1980 | 0 | 0 |
| 1981 | 1 | 0 |
| 1982 | 0 | 0 |
| 1983 | 0 | 0 |
| 1984 | 0 | 0 |
| 1985 | 1 | 0 |
| 1986 | 0 | 0 |
| 1987 | 1 | 0 |
| 1988 | 0 | 0 |
| 1989 | 0 | 0 |
| 1990 | 0 | 0 |
| 1991 | 0 | 0 |
| 1992 | 0 | 0 |
| 1993 | 0 | 0 |
| 1994 | 0 | 0 |
| 1995 | 0 | 0 |
| 1996 | 0 | 0 |
| 1997 | 0 | 0 |
| 1998 | 1 | 0 |
| 1999 | 0 | 0 |
| 2000 | 0 | 0 |
| 2001 | 0 | 0 |
| 2002 | 0 | 0 |
| 2003 | 0 | 0 |
| 2004 | 0 | 0 |
| 2005 | 0 | 2 |
| 2006 | 1 | 0 |
| 2007 | 1 | 0 |
| 2008 | 0 | 0 |
| 2009 | 0 | 0 |
| 2010 | 0 | 1 |
| 2011 | 0 | 0 |
| 2012 | 1 | 0 |
| 2013 | 0 | 1 |
| 2014 | 0 | 4 |
| 2015 | 0 | 0 |
| 2016 | 3 | 2 |
| 2017 | 3 | 7 |
| 2018 | 2 | 3 |
| 2019 | 1 | 4 |
| 2020 | 1 | 3 |
| 2021 | 3 | 2 |
| 2022 | 3 | 2 |
| 2023 | 6 | 4 |
| 2024 | 2 | 2 |
| 2025 | 1 | 0 |
| 2026 | 0 | 1 |
By publication year. Applications have been published since 2001. 2026 runs to 8 Oct.
Recent patents
- Spark igniter with magnetic field for pushing spark25 Feb 2025US 12,237,649 B2Pratt & Whitney Canada Corp.
- Spark plug17 Sep 2024US 12,095,234 B2Niterra Co., Ltd.
- Spark plug and methods of manufacturing same9 Jan 2024US 11,870,221 B2Federal-Mogul Ignition Company
- Passive prechamber spark plug14 Nov 2023US 11,815,005 B2Bayerische Motoren Werke Aktiengesellschaft
- Multi-ignition coil control system10 Oct 2023US 11,784,466 B2Hyundai Motor Company
- Traveling spark igniter5 Mar 2026US 2026/0066621 A1Champion Aerospace Inc.
- Igniter3 Oct 2024US 2024/0332915 A1Pratt & Whitney Canada Corp.
- Spark plug15 Aug 2024US 2024/0275137 A1Niterra Co., Ltd.
- Spark plug and methods of manufacturing same13 Apr 2023US 2023/0116256 A1Federal-Mogul Ignition Company
- Passive Prechamber Spark Plug16 Mar 2023US 2023/0082577 A1Bayerische Motoren Werke Aktiengesellschaft
Most cited
By later US patents
- Combined fuel injection valve-ignition plug65US 7,077,100 B2Robert Bosch GmbH · 2006
- Dual internal electric spark plug10US 4,308,487 A1981
- Spark plug design having two electrically isolated center electrodes9US 4,082,976 AChampion Spark Plug Company · 1978
- Ignition apparatus for internal combustion engines8US 4,557,229 ANippondenso Co., Ltd. · 1985
- Spark plug5US 4,029,986 A1977