H01T 13/462
In series connection
Official title: {in series connection}
H01T13/462 (In series connection) appears on 63 US grants and 31 published applications in this corpus.
Search patents in H01T- Granted patents
- 63
- Published applications
- 31
- Assignees
- 29
- Inventors
- 95
- Latest grant
- 9 Jul 2024
Filings by year
| Year | Granted patents | Published applications |
|---|---|---|
| 1976 | 1 | 0 |
| 1977 | 3 | 0 |
| 1978 | 3 | 0 |
| 1979 | 0 | 0 |
| 1980 | 0 | 0 |
| 1981 | 2 | 0 |
| 1982 | 0 | 0 |
| 1983 | 1 | 0 |
| 1984 | 2 | 0 |
| 1985 | 2 | 0 |
| 1986 | 1 | 0 |
| 1987 | 1 | 0 |
| 1988 | 1 | 0 |
| 1989 | 1 | 0 |
| 1990 | 2 | 0 |
| 1991 | 1 | 0 |
| 1992 | 5 | 0 |
| 1993 | 2 | 0 |
| 1994 | 1 | 0 |
| 1995 | 2 | 0 |
| 1996 | 0 | 0 |
| 1997 | 2 | 0 |
| 1998 | 2 | 0 |
| 1999 | 0 | 0 |
| 2000 | 0 | 0 |
| 2001 | 0 | 0 |
| 2002 | 0 | 2 |
| 2003 | 2 | 0 |
| 2004 | 1 | 1 |
| 2005 | 0 | 1 |
| 2006 | 1 | 2 |
| 2007 | 2 | 1 |
| 2008 | 1 | 1 |
| 2009 | 0 | 1 |
| 2010 | 1 | 1 |
| 2011 | 1 | 1 |
| 2012 | 0 | 1 |
| 2013 | 2 | 0 |
| 2014 | 0 | 0 |
| 2015 | 0 | 1 |
| 2016 | 1 | 1 |
| 2017 | 1 | 1 |
| 2018 | 2 | 3 |
| 2019 | 3 | 2 |
| 2020 | 0 | 1 |
| 2021 | 1 | 1 |
| 2022 | 2 | 3 |
| 2023 | 6 | 5 |
| 2024 | 1 | 1 |
By publication year. Applications have been published since 2001.
Subgroups
Granted patents
Recent patents
- Spark plug, spark plug electrode, and method of manufacturing the same9 Jul 2024US 12,034,278 B2Federal-Mogul Ignition Company
- Spark plug, spark plug electrode, and method of manufacturing the same28 Nov 2023US 11,831,130 B2Federal-Mogul Ignition Company
- Passive prechamber spark plug14 Nov 2023US 11,815,005 B2Bayerische Motoren Werke Aktiengesellschaft
- Spark plug17 Oct 2023US 11,791,612 B2Caterpillar Inc.
- Passive prechamber spark plug5 Sep 2023US 11,749,972 B2Bayerische Motoren Werke Aktiengesellschaft
- Spark plug, spark plug electrode, and method of manufacturing the same8 Feb 2024US 2024/0047949 A1Federal-Mogul Ignition Company
- Spark plug, spark plug electrode, and method of manufacturing the same5 Oct 2023US 2023/0318265 A1Fedrral-Mogul Ignition GmbH
- Spark plug11 May 2023US 2023/0143967 A1Caterpillar Inc.
- Passive Prechamber Spark Plug23 Mar 2023US 2023/0093289 A1Bayerische Motoren Werke Aktiengesellschaft
- Passive Prechamber Spark Plug16 Mar 2023US 2023/0082577 A1Bayerische Motoren Werke Aktiengesellschaft
Most cited
By later US patents
- Spark plug with measuring means78US 4,489,596 ARobert Bosch GmbH · 1984
- Spark ignition device and internal combustion engine with the same27US 7,228,840 B2Hitachi, Ltd. · 2007
- Multi-gap spark ignition system24US 4,535,735 ANippon Soken, Inc. · 1985
- Spark plug for an internal combustion engine and a method of making the same23US 5,821,675 ANgk Spark Plug Co., Ltd. · 1998
- Spark plug for externally ignited internal combustion engine21US 4,549,114 A1985