H01T 13/12
Means on sparking plugs for facilitating engagement by tool or by hand
H01T13/12 (Means on sparking plugs for facilitating engagement by tool or by hand) appears on 21 US grants and 18 published applications in this corpus.
Search patents in H01T- Granted patents
- 21
- Published applications
- 18
- Assignees
- 12
- Inventors
- 36
- Latest grant
- 16 Apr 2024
Filings by year
| Year | Granted patents | Published applications |
|---|---|---|
| 1978 | 1 | 0 |
| 1979 | 0 | 0 |
| 1980 | 0 | 0 |
| 1981 | 0 | 0 |
| 1982 | 0 | 0 |
| 1983 | 0 | 0 |
| 1984 | 0 | 0 |
| 1985 | 0 | 0 |
| 1986 | 0 | 0 |
| 1987 | 0 | 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 | 0 | 0 |
| 1999 | 0 | 0 |
| 2000 | 0 | 0 |
| 2001 | 1 | 0 |
| 2002 | 1 | 0 |
| 2003 | 0 | 0 |
| 2004 | 0 | 0 |
| 2005 | 0 | 0 |
| 2006 | 0 | 1 |
| 2007 | 1 | 0 |
| 2008 | 0 | 0 |
| 2009 | 0 | 0 |
| 2010 | 1 | 2 |
| 2011 | 0 | 0 |
| 2012 | 0 | 2 |
| 2013 | 1 | 0 |
| 2014 | 2 | 2 |
| 2015 | 2 | 2 |
| 2016 | 3 | 2 |
| 2017 | 1 | 2 |
| 2018 | 3 | 1 |
| 2019 | 0 | 0 |
| 2020 | 0 | 1 |
| 2021 | 2 | 2 |
| 2022 | 1 | 0 |
| 2023 | 0 | 0 |
| 2024 | 1 | 1 |
By publication year. Applications have been published since 2001.
Recent patents
- Contact surface of the spark plug jacket16 Apr 2024US 11,962,130 B2Caterpillar Energy Solutions GmbH
- High thread jamb nut with retaining clip22 Feb 2022US 11,258,235 B2Fram Group IP LLC
- High thread spark plug with non-axisymmetric ground shield for precise ground strap orientation3 Aug 2021US 11,081,864 B2Fram Group IP LLC
- Spark plug assembly for an internal combustion engine2 Mar 2021US 10,938,185 B1Ford Global Technologies, LLC
- Spark plug and semi-finished product thereof4 Dec 2018US 10,148,068 B2Denso Corporation
- Improved contact surface of the spark plug jacket15 Feb 2024US 2024/0055836 A1Caterpillar Energy Solutions GmbH
- High thread jamb nut with retaining clip8 Apr 2021US 2021/0104874 A1Fram Group IP LLC
- High thread spark plug with non-axisymmetric ground shield for precise ground strap orientation8 Apr 2021US 2021/0104875 A1Fram Group IP LLC
- The fulcrum plug3 Dec 2020US 2020/0381902 A1
- Spark plug and semi-finished product thereof17 May 2018US 2018/0138665 A1Denso Corporation
Most cited
By later US patents
- Spark plug and method of manufacturing the same23US 6,414,420 B1Ngk Spark Plug Co., Ltd. · 2002
- Spark plug11US 6,170,451 B2Ngk Spark Plug Co., Ltd. · 2001
- Spark plug having improved ground electrode orientation and method of forming5US 8,866,369 B2Federal-Mogul Ignition Company · 2014
- Spark plugs for internal combustion engines4US 4,112,905 A1978
- Spark plug, in particular swirl chamber spark plug4US 9,166,378 B2Robert Bosch GmbH · 2015