F02N 19/10
By heating of engine coolants
Official title: by heating of engine coolants
F02N19/10 (By heating of engine coolants) appears on 192 US grants and 150 published applications in this corpus.
Search patents in F02N- Granted patents
- 192
- Published applications
- 150
- Assignees
- 119
- Inventors
- 398
- Latest grant
- 4 Aug 2026
Filings by year
| Year | Granted patents | Published applications |
|---|---|---|
| 1976 | 5 | 0 |
| 1977 | 3 | 0 |
| 1978 | 1 | 0 |
| 1979 | 0 | 0 |
| 1980 | 4 | 0 |
| 1981 | 2 | 0 |
| 1982 | 4 | 0 |
| 1983 | 3 | 0 |
| 1984 | 3 | 0 |
| 1985 | 2 | 0 |
| 1986 | 1 | 0 |
| 1987 | 4 | 0 |
| 1988 | 4 | 0 |
| 1989 | 5 | 0 |
| 1990 | 3 | 0 |
| 1991 | 3 | 0 |
| 1992 | 1 | 0 |
| 1993 | 2 | 0 |
| 1994 | 4 | 0 |
| 1995 | 1 | 0 |
| 1996 | 5 | 0 |
| 1997 | 0 | 0 |
| 1998 | 4 | 0 |
| 1999 | 2 | 0 |
| 2000 | 3 | 0 |
| 2001 | 2 | 0 |
| 2002 | 2 | 9 |
| 2003 | 8 | 3 |
| 2004 | 4 | 12 |
| 2005 | 8 | 4 |
| 2006 | 5 | 9 |
| 2007 | 2 | 5 |
| 2008 | 3 | 5 |
| 2009 | 2 | 8 |
| 2010 | 4 | 2 |
| 2011 | 4 | 2 |
| 2012 | 4 | 2 |
| 2013 | 0 | 4 |
| 2014 | 4 | 6 |
| 2015 | 2 | 14 |
| 2016 | 6 | 7 |
| 2017 | 8 | 12 |
| 2018 | 10 | 11 |
| 2019 | 11 | 16 |
| 2020 | 11 | 5 |
| 2021 | 7 | 3 |
| 2022 | 8 | 3 |
| 2023 | 2 | 2 |
| 2024 | 3 | 3 |
| 2025 | 1 | 0 |
| 2026 | 2 | 3 |
By publication year. Applications have been published since 2001. 2026 runs to 8 Oct.
Recent patents
- Method and apparatus for detecting the operation of an engine-independent auxiliary heater and for diagnosing a coolant temperature of a motor vehicle4 Aug 2026US 12,697,855 B2Volkswagen Aktiengesellschaft
- Internal combustion engine7 Jul 2026US 12,674,433 B2Toyota Jidosha Kabushiki Kaisha
- Vehicle heater and controls therefor21 Jan 2025US 12,203,436 B2Dometic Marine Canada Inc.
- Portable efficient heater management system for diesel engine generators that heats the engine block water economically with the heat obtained from an external heat source17 Sep 2024US 12,092,012 B2Panoteknik Jenerator Elektrik Sanayi Ve Ticaret Limited Sirketi
- Drive system of a plug-in hybrid vehicle and method for operating such a drive system2 Jul 2024US 12,024,155 B2Dr. Ing. h,c.F. Porsche Aktiengesellschaft
- Efficient heating management system integrated to a diesel engine generator using heat obtained from an external heat source to economically heat the engine block coolant6 Aug 2026US 2026/0226877 A1Panoteknik Jenerator Elektrik Sanayi Ve Ticaret Limited Sirketi
- Systems and methods for preconditioning a work vehicle for operation2 Apr 2026US 2026/0092551 A1Deere & Company
- Internal combustion engine29 Jan 2026US 2026/0028956 A1Toyota Jidosha Kabushiki Kaisha
- Coolant heater protection systems and methods12 Sep 2024US 2024/0301813 A1Phillips &T emro Industries Inc.
- Method and apparatus for detecting the operation of an engine-independent auxiliary heater and for diagnosing a coolant temperature of a motor vehicle27 Jun 2024US 2024/0208297 A1Volkswagen Aktiengesellschaft
Most cited
By later US patents
- Hybrid electric vehicle regenerative braking energy recovery system317US 5,291,960 AFord Motor Company · 1994
- Hybird vehicle cooling system127US 5,255,733 AFord Motor Company · 1993
- Auxiliary power unit for vehicles113US 4,448,157 A1984
- System for controlling the temperature of the air in a cabin for an engine-electric motor hybrid car103US 5,497,941 ANippondenso Co., Ltd. · 1996
- Auxiliary air conditioning system for trucks and other heavy duty vehicles87US 4,825,663 APACCAR Inc · 1989