H01T 13/14
Means for self-cleaning
H01T13/14 (Means for self-cleaning) appears on 79 US grants and 43 published applications in this corpus.
Search patents in H01T- Granted patents
- 79
- Published applications
- 43
- Assignees
- 33
- Inventors
- 168
- Latest grant
- 4 Jul 2023
Filings by year
| Year | Granted patents | Published applications |
|---|---|---|
| 1976 | 2 | 0 |
| 1977 | 0 | 0 |
| 1978 | 1 | 0 |
| 1979 | 0 | 0 |
| 1980 | 1 | 0 |
| 1981 | 4 | 0 |
| 1982 | 0 | 0 |
| 1983 | 2 | 0 |
| 1984 | 2 | 0 |
| 1985 | 1 | 0 |
| 1986 | 0 | 0 |
| 1987 | 1 | 0 |
| 1988 | 1 | 0 |
| 1989 | 2 | 0 |
| 1990 | 1 | 0 |
| 1991 | 0 | 0 |
| 1992 | 3 | 0 |
| 1993 | 2 | 0 |
| 1994 | 0 | 0 |
| 1995 | 0 | 0 |
| 1996 | 2 | 0 |
| 1997 | 0 | 0 |
| 1998 | 1 | 0 |
| 1999 | 5 | 0 |
| 2000 | 2 | 0 |
| 2001 | 3 | 0 |
| 2002 | 1 | 0 |
| 2003 | 3 | 2 |
| 2004 | 1 | 0 |
| 2005 | 0 | 2 |
| 2006 | 2 | 1 |
| 2007 | 0 | 0 |
| 2008 | 1 | 0 |
| 2009 | 1 | 2 |
| 2010 | 0 | 1 |
| 2011 | 0 | 2 |
| 2012 | 1 | 6 |
| 2013 | 5 | 2 |
| 2014 | 1 | 3 |
| 2015 | 2 | 2 |
| 2016 | 5 | 4 |
| 2017 | 4 | 2 |
| 2018 | 3 | 2 |
| 2019 | 3 | 8 |
| 2020 | 4 | 1 |
| 2021 | 5 | 2 |
| 2022 | 0 | 0 |
| 2023 | 1 | 0 |
| 2024 | 0 | 0 |
| 2025 | 0 | 0 |
| 2026 | 0 | 1 |
By publication year. Applications have been published since 2001. 2026 runs to 8 Oct.
Recent patents
- Spark plug heat up method via transient control of the spark discharge current4 Jul 2023US 11,692,522 B2Clean Combustion Engine Technology Inc.
- Spark plug with drainage features in terminal21 Sep 2021US 11,128,108 B1Denso Corporation
- Laser ignition system15 Jun 2021US 11,035,335 B2Caterpillar Inc.
- Fouling resistant spark plugs27 Apr 2021US 10,992,112 B2Fram Group IP LLC
- Spark plug for an internal combustion engine having a combustion pre-chamber13 Apr 2021US 10,975,759 B2Cummins Inc.
- Spark plug systems and methods2 Jul 2026US 2026/0188984 A1
- Spark plug heat up method via transient control of the spark discharge current11 Nov 2021US 2021/0348588 A1Clean Combustion Engine Technology Inc.
- Laser ignition system20 May 2021US 2021/0148325 A1Caterpillar Inc.
- Ignition apparatus for internal combustion engine2 Jan 2020US 2020/0006926 A1Denso Corporation
- Spark plug24 Oct 2019US 2019/0326733 A1Ngk Spark Plug Co., Ltd.
Most cited
By later US patents
- Spark plug69US 3,958,144 A1976
- Spark plug temperature control63US 4,810,929 A1989
- Spark plug with center electrode having variable diameter portion retracted from front end on insulator23US 5,929,556 ANgk Spark Plug Co., Ltd. · 1999
- Spark plug having an ablative coating for anticontaminat fouling22US 5,274,298 AFord Motor Company · 1993
- Spark plug for an internal combustion engine22US 5,877,584 ANgk Spark Plug Co., Ltd. · 1999