B61D 27/00
Heating, cooling, ventilating, or air-conditioning
Official title: Heating, cooling, ventilating, or air-conditioning {(heating, cooling or ventilating devices for vehicles in general B60H1/00; devices for moistening air in vehicles B60H3/02; devices for filtering air in vehicles B60H3/06)}
B61D27/00 (Heating, cooling, ventilating, or air-conditioning) appears on 267 US grants and 298 published applications in this corpus.
Search patents in B61D- Granted patents
- 267
- Published applications
- 298
- Assignees
- 141
- Inventors
- 784
- Latest grant
- 6 Oct 2026
Filings by year
| Year | Granted patents | Published applications |
|---|---|---|
| 1977 | 2 | 0 |
| 1978 | 0 | 0 |
| 1979 | 0 | 0 |
| 1980 | 2 | 0 |
| 1981 | 3 | 0 |
| 1982 | 3 | 0 |
| 1983 | 2 | 0 |
| 1984 | 0 | 0 |
| 1985 | 1 | 0 |
| 1986 | 1 | 0 |
| 1987 | 3 | 0 |
| 1988 | 3 | 0 |
| 1989 | 2 | 0 |
| 1990 | 4 | 0 |
| 1991 | 4 | 0 |
| 1992 | 6 | 0 |
| 1993 | 6 | 0 |
| 1994 | 5 | 0 |
| 1995 | 5 | 0 |
| 1996 | 5 | 0 |
| 1997 | 5 | 0 |
| 1998 | 2 | 0 |
| 1999 | 3 | 0 |
| 2000 | 4 | 0 |
| 2001 | 1 | 3 |
| 2002 | 2 | 5 |
| 2003 | 3 | 6 |
| 2004 | 3 | 4 |
| 2005 | 6 | 11 |
| 2006 | 2 | 1 |
| 2007 | 4 | 4 |
| 2008 | 1 | 3 |
| 2009 | 3 | 3 |
| 2010 | 1 | 8 |
| 2011 | 1 | 5 |
| 2012 | 0 | 3 |
| 2013 | 4 | 9 |
| 2014 | 6 | 17 |
| 2015 | 3 | 19 |
| 2016 | 7 | 13 |
| 2017 | 13 | 18 |
| 2018 | 8 | 23 |
| 2019 | 14 | 27 |
| 2020 | 20 | 18 |
| 2021 | 18 | 15 |
| 2022 | 13 | 26 |
| 2023 | 13 | 18 |
| 2024 | 17 | 21 |
| 2025 | 20 | 13 |
| 2026 | 13 | 5 |
By publication year. Applications have been published since 2001. 2026 runs to 8 Oct.
Subgroups
Granted patents
Recent patents
- Air conditioner for railway vehicle6 Oct 2026US 12,752,820 B2Mitsubishi Electric Corporation
- Method and test arrangement for testing an air-conditioning unit25 Aug 2026US 12,715,263 B2Siemens Mobility GmbH
- Device for cooling a component intended to be fitted to a vehicle and associated vehicle4 Aug 2026US 12,698,015 B2ALSTOM Holdings
- Methods for regulating air conditioning temperature of subways in smart cities and internet of things systems thereof14 Jul 2026US 12,679,427 B2Chengdu Qinchuan Iot Technology Co., Ltd.
- Method for monitoring an air-conditioned passenger compartment of a vehicle, and air-conditioning arrangement for carrying out such a method17 Mar 2026US 12,576,691 B2Siemens Mobility GmbH
- Power supply system for railway vehicles20 Aug 2026US 2026/0246271 A1Mitsubishi Electric Corporation
- Rail vehicle6 Aug 2026US 2026/0225627 A1Siemens Mobility GmbH
- Insulated and refrigerated railroad car with vacuum insulated sections9 Jul 2026US 2026/0192831 A1Gunderson LLC
- Controlling an air-conditioning device using artificial intelligence14 May 2026US 2026/0131624 A1Siemens Mobility GmbH
- Rail vehicle and low-vacuum rail vehicle system29 Jan 2026US 2026/0028054 A1Crrc Qingdao Sifang Co., Ltd.
Most cited
By later US patents
- Thermally insulated cargo container99US 5,507,405 AGreat Dane Trailers, Inc. · 1996
- Auxiliary active heating and air conditioning system for motor vehicle applications83US 5,901,780 ARocky Research · 1999
- Microprocessor controlled climate control device for a plurality of mass transit vehicles77US 5,104,037 AAEG Westinghouse Transportation Systems, Inc. · 1992
- Combined generator set and air conditioning compressor drive system68US 5,125,236 AOnan Corporation · 1992
- Vehicle humidity control apparatus for preventing fogging of windows64US 4,408,660 ADiesel Kiki Co., Ltd. · 1983