F02P 19/027
Safety devices
Official title: {Safety devices, e.g. for diagnosing the glow plugs or the related circuits}
F02P19/027 (Safety devices) appears on 56 US grants and 47 published applications in this corpus.
Search patents in F02P- Granted patents
- 56
- Published applications
- 47
- Assignees
- 31
- Inventors
- 108
- Latest grant
- 17 Mar 2026
Filings by year
| Year | Granted patents | Published applications |
|---|---|---|
| 1980 | 1 | 0 |
| 1981 | 0 | 0 |
| 1982 | 0 | 0 |
| 1983 | 0 | 0 |
| 1984 | 1 | 0 |
| 1985 | 2 | 0 |
| 1986 | 0 | 0 |
| 1987 | 1 | 0 |
| 1988 | 0 | 0 |
| 1989 | 2 | 0 |
| 1990 | 0 | 0 |
| 1991 | 0 | 0 |
| 1992 | 1 | 0 |
| 1993 | 0 | 0 |
| 1994 | 0 | 0 |
| 1995 | 0 | 0 |
| 1996 | 0 | 0 |
| 1997 | 1 | 0 |
| 1998 | 1 | 0 |
| 1999 | 0 | 0 |
| 2000 | 1 | 0 |
| 2001 | 2 | 0 |
| 2002 | 1 | 0 |
| 2003 | 0 | 0 |
| 2004 | 0 | 1 |
| 2005 | 0 | 0 |
| 2006 | 1 | 1 |
| 2007 | 2 | 2 |
| 2008 | 1 | 4 |
| 2009 | 1 | 7 |
| 2010 | 1 | 5 |
| 2011 | 4 | 3 |
| 2012 | 4 | 0 |
| 2013 | 3 | 3 |
| 2014 | 3 | 6 |
| 2015 | 1 | 3 |
| 2016 | 4 | 3 |
| 2017 | 7 | 2 |
| 2018 | 2 | 1 |
| 2019 | 2 | 1 |
| 2020 | 0 | 2 |
| 2021 | 2 | 0 |
| 2022 | 2 | 1 |
| 2023 | 0 | 0 |
| 2024 | 0 | 1 |
| 2025 | 1 | 1 |
| 2026 | 1 | 0 |
By publication year. Applications have been published since 2001. 2026 runs to 8 Oct.
Recent patents
- Method for diagnosing faults in the operation of a fuel heating system associated with an internal combustion engine17 Mar 2026US 12,577,920 B2Robert Bosch Limitada
- System for lighting off an auxiliary occupational emissions device and method of operating the same15 Apr 2025US 12,276,218 B2Beecher Emission Solution Technologies, LLC
- Engine glow plug disconnection detection method1 Nov 2022US 11,486,344 B2Hyundai Motor Company
- Method for determining the resistance temperature characteristic of a ceramic glow plug1 Mar 2022US 11,262,393 B2BorgWarner Ludwigsburg GmbH
- Method for the detection of a glow plug replacement23 Nov 2021US 11,181,444 B2BorgWarner Ludwigsburg GmbH
- Method for diagnosing faults in the operation of a fuel heating system associated with an internal combustion engine27 Feb 2025US 2025/0067228 A1Robert Bosch Limitada
- System for lighting off an auxiliary occupational emissions device and method of operating the same15 Aug 2024US 2024/0271554 A1Beecher Emission Solution Technologies, LLC
- Engine glow plug disconnection detection method3 Mar 2022US 2022/0065213 A1Hyundai Motor Company
- Method for determining the resistance temperature characteristic of a ceramic glow plug8 Oct 2020US 2020/0319235 A1BorgWarner Ludwigsburg GmbH
- Method for the detection of a glow plug replacement10 Sep 2020US 2020/0284691 A1BorgWarner Ludwigsburg GmbH
Most cited
By later US patents
- Electrical starting system for diesel engines68US 6,148,258 ANartron Corporation · 2000
- Glow plug alternator control33US 4,858,576 ACaterpillar Inc. · 1989
- Interface and control unit for a diesel engine electronic controller and glow plug circuits, and method of glow plug operation26US 4,862,370 ARobert Bosch GmbH · 1989
- Method and apparatus for detecting an open circuit in a glow plug group for combination with a glow plug heating control circuit24US 4,500,775 ANippondenso Co., Ltd. · 1985
- Method of diagnosing glow plug and glow plug drive control device24US 9,453,491 B2Bosch Corporation · 2016