F01P 11/20
Concerning atmospheric freezing conditions
Official title: concerning atmospheric freezing conditions, e.g. automatically draining or heating during frosty weather
F01P11/20 (Concerning atmospheric freezing conditions) appears on 167 US grants and 149 published applications in this corpus.
Search patents in F01P- Granted patents
- 167
- Published applications
- 149
- Assignees
- 99
- Inventors
- 374
- Latest grant
- 4 Aug 2026
Filings by year
| Year | Granted patents | Published applications |
|---|---|---|
| 1976 | 1 | 0 |
| 1977 | 0 | 0 |
| 1978 | 1 | 0 |
| 1979 | 0 | 0 |
| 1980 | 2 | 0 |
| 1981 | 1 | 0 |
| 1982 | 3 | 0 |
| 1983 | 2 | 0 |
| 1984 | 0 | 0 |
| 1985 | 4 | 0 |
| 1986 | 3 | 0 |
| 1987 | 2 | 0 |
| 1988 | 1 | 0 |
| 1989 | 1 | 0 |
| 1990 | 0 | 0 |
| 1991 | 0 | 0 |
| 1992 | 0 | 0 |
| 1993 | 1 | 0 |
| 1994 | 2 | 0 |
| 1995 | 2 | 0 |
| 1996 | 2 | 0 |
| 1997 | 5 | 0 |
| 1998 | 4 | 0 |
| 1999 | 3 | 0 |
| 2000 | 3 | 0 |
| 2001 | 2 | 0 |
| 2002 | 3 | 11 |
| 2003 | 8 | 5 |
| 2004 | 5 | 14 |
| 2005 | 8 | 6 |
| 2006 | 10 | 12 |
| 2007 | 1 | 4 |
| 2008 | 6 | 7 |
| 2009 | 4 | 5 |
| 2010 | 2 | 2 |
| 2011 | 4 | 3 |
| 2012 | 2 | 5 |
| 2013 | 2 | 3 |
| 2014 | 5 | 2 |
| 2015 | 1 | 8 |
| 2016 | 3 | 6 |
| 2017 | 8 | 10 |
| 2018 | 10 | 13 |
| 2019 | 10 | 7 |
| 2020 | 11 | 9 |
| 2021 | 6 | 1 |
| 2022 | 3 | 4 |
| 2023 | 3 | 5 |
| 2024 | 2 | 4 |
| 2025 | 4 | 2 |
| 2026 | 1 | 1 |
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
- Method for heating a housing containing at least one functional body24 Jun 2025US 12,338,758 B2Vitesco Technologies GmbH
- Supercooling cancellation device, heat storage device, and power unit29 Apr 2025US 12,286,923 B2Panasonic Holdings Corporation
- Gas turbine engine heaters4 Mar 2025US 12,240,428 B2HotStart, Inc.
- Fan shroud for a vehicle heat-exchange module21 Jan 2025US 12,203,488 B2Valeo Systemes Thermiques
- 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
- Valve assembly for a thermal management system8 May 2025US 2025/0146587 A1Transportation IP Holdings, LLC
- Wind shielding system and method for regulating airflow to radiator cooling package of vehicle1 May 2025US 2025/0135873 A1Volvo Truck Corporation
- 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
- Thermal management systems and methods118US 7,147,071 B2Battelle Energy Alliance, LLC · 2006
- Method of thermal management for a hybrid vehicle113US 6,464,027 B1Visteon Global Technologies, Inc. · 2002
- Motor vehicle heat storage device with coolant bypass74US 5,407,130 AHonda Giken Kogyo Kabushiki Kaisha · 1995
- Motor vehicle exhaust gas heat exchanger for heating engine coolant and lubricating oil57US 4,685,430 AValeo · 1987