H01T 13/08
Mounting, fixing or sealing of sparking plugs
Official title: Mounting, fixing or sealing of sparking plugs, e.g. in combustion chamber
H01T13/08 (Mounting, fixing or sealing of sparking plugs) appears on 212 US grants and 196 published applications in this corpus.
Search patents in H01T- Granted patents
- 212
- Published applications
- 196
- Assignees
- 70
- Inventors
- 354
- Latest grant
- 21 Oct 2025
Filings by year
| Year | Granted patents | Published applications |
|---|---|---|
| 1977 | 4 | 0 |
| 1978 | 0 | 0 |
| 1979 | 0 | 0 |
| 1980 | 5 | 0 |
| 1981 | 1 | 0 |
| 1982 | 1 | 0 |
| 1983 | 1 | 0 |
| 1984 | 1 | 0 |
| 1985 | 1 | 0 |
| 1986 | 0 | 0 |
| 1987 | 0 | 0 |
| 1988 | 0 | 0 |
| 1989 | 0 | 0 |
| 1990 | 2 | 0 |
| 1991 | 2 | 0 |
| 1992 | 0 | 0 |
| 1993 | 1 | 0 |
| 1994 | 0 | 0 |
| 1995 | 0 | 0 |
| 1996 | 0 | 0 |
| 1997 | 1 | 0 |
| 1998 | 4 | 0 |
| 1999 | 3 | 0 |
| 2000 | 2 | 0 |
| 2001 | 2 | 2 |
| 2002 | 3 | 2 |
| 2003 | 4 | 2 |
| 2004 | 1 | 2 |
| 2005 | 1 | 4 |
| 2006 | 4 | 1 |
| 2007 | 2 | 0 |
| 2008 | 0 | 8 |
| 2009 | 1 | 6 |
| 2010 | 7 | 9 |
| 2011 | 5 | 2 |
| 2012 | 4 | 5 |
| 2013 | 4 | 4 |
| 2014 | 7 | 15 |
| 2015 | 10 | 15 |
| 2016 | 11 | 14 |
| 2017 | 16 | 14 |
| 2018 | 20 | 26 |
| 2019 | 16 | 16 |
| 2020 | 20 | 18 |
| 2021 | 18 | 4 |
| 2022 | 4 | 8 |
| 2023 | 8 | 7 |
| 2024 | 12 | 8 |
| 2025 | 3 | 1 |
| 2026 | 0 | 3 |
By publication year. Applications have been published since 2001. 2026 runs to 8 Oct.
Subgroups
Granted patents
Recent patents
- Pre-chamber assembly21 Oct 2025US 12,448,913 B2Innio Jenbacher GmbH & Co OG
- Spark plug socket23 Sep 2025US 12,420,384 B2Milwaukee Electric Tool Corporation
- Support pin for igniter assembly3 Jun 2025US 12,320,523 B2Pratt & Whitney Canada Corp.
- Spark plug3 Dec 2024US 12,160,086 B2Niterra Co., Ltd.
- Prechamber spark plug with improved cap22 Oct 2024US 12,126,146 B2Robert Bosch GmbH
- Spark Plug, Spark Plug Sleeve And Spark Plug Assembly For A Gas Engine27 Aug 2026US 2026/0251087 A1Caterpillar Energy Solutions GmbH
- Spark plug systems and methods2 Jul 2026US 2026/0188984 A1
- Spark plug having improved sealing properties26 Feb 2026US 2026/0058443 A1
- Support Pin for Igniter Assembly10 Apr 2025US 2025/0116404 A1Pratt & Whitney Canada Corp.
- Internal combustion engine comprising a spark plug and negative spark positions21 Nov 2024US 2024/0384679 A1
Most cited
By later US patents
- Spark plug having an encapsulated center firing electrode gap39US 4,987,868 ACaterpillar Inc. · 1991
- Dual electrode high thread spark plug29US 5,918,571 AAllied-Signal Inc. · 1999
- Spark plug with integral retainer nut27US 5,697,334 AAlliedSignal Inc. · 1997
- Ignitor for air/fuel mixture and engine therewith and method of assembly thereof into a cylinder head26US 8,365,710 B2Federal-Mogul Ignition Company · 2013
- Radial gap high thread spark plug22US 6,104,130 AAlliedSignal Inc. · 2000