H01T 13/28
Having spherically shaped electrodes
Official title: having spherically shaped electrodes, e.g. ball-shaped
H01T13/28 (Having spherically shaped electrodes) appears on 13 US grants and 11 published applications in this corpus.
Search patents in H01T- Granted patents
- 13
- Published applications
- 11
- Assignees
- 8
- Inventors
- 20
- Latest grant
- 18 Feb 2020
Filings by year
| Year | Granted patents | Published applications |
|---|---|---|
| 1995 | 1 | 0 |
| 1996 | 0 | 0 |
| 1997 | 0 | 0 |
| 1998 | 0 | 0 |
| 1999 | 1 | 0 |
| 2000 | 1 | 0 |
| 2001 | 0 | 0 |
| 2002 | 0 | 1 |
| 2003 | 1 | 0 |
| 2004 | 0 | 0 |
| 2005 | 1 | 0 |
| 2006 | 0 | 0 |
| 2007 | 0 | 0 |
| 2008 | 0 | 0 |
| 2009 | 0 | 0 |
| 2010 | 0 | 0 |
| 2011 | 0 | 0 |
| 2012 | 0 | 1 |
| 2013 | 1 | 1 |
| 2014 | 0 | 0 |
| 2015 | 0 | 2 |
| 2016 | 2 | 2 |
| 2017 | 3 | 1 |
| 2018 | 0 | 0 |
| 2019 | 1 | 3 |
| 2020 | 1 | 0 |
By publication year. Applications have been published since 2001.
Subgroups
Granted patents
Recent patents
- Spark plug ignition tip, spark plug device, and method for producing a spark plug ignition tip18 Feb 2020US 10,566,768 B2Federal-Mogul Ignition Company
- Spark plug for internal combustion engine22 Oct 2019US 10,454,252 B2Denso Corporation
- Programmable plasma ignition plug21 Nov 2017US 9,825,433 B2
- Plasma header gasket and system4 Apr 2017US 9,611,826 B2SVMTech, LLC
- Plasma ignition plug for an internal combustion engine28 Mar 2017US 9,605,645 B2
- Spark plug ignition tip, spark plug device, and method for producing a spark plug ignition tip19 Sep 2019US 2019/0288488 A1Federal-Mogul Ignition Company
- Series clearance multi-point discharging sparking plug16 May 2019US 2019/0148920 A1Lotus Spark Plugs Technology (Hangzhou) Co. Ltd
- Spark plug for internal combustion engine4 Apr 2019US 2019/0103731 A1Denso Corporation
- Programmable plasma ignition plug27 Jul 2017US 2017/0214222 A1
- Plasma header gasket and system1 Dec 2016US 2016/0348635 A1SVMTech, LLC
Most cited
By later US patents
- Ignition plug39US 5,408,961 AInnovative Automative Technologies Int. Ltd. · 1995
- High electrical stiction spark plug26US 6,670,740 B22003
- Spark plug22US 6,060,822 ACentury Development International Ltd. · 2000
- Spark plug4US 5,936,332 ACentury Development International Ltd. · 1999
- Jet nozzle spark plug2US 6,882,092 B12005