F25B 29/00
Combined heating and refrigeration systems
Official title: Combined heating and refrigeration systems, e.g. operating alternately or simultaneously
F25B29/00 (Combined heating and refrigeration systems) appears on 920 US grants and 720 published applications in this corpus.
Search patents in F25B- Granted patents
- 920
- Published applications
- 720
- Assignees
- 447
- Inventors
- 1,809
- Latest grant
- 29 Sep 2026
Filings by year
| Year | Granted patents | Published applications |
|---|---|---|
| 1976 | 19 | 0 |
| 1977 | 33 | 0 |
| 1978 | 19 | 0 |
| 1979 | 20 | 0 |
| 1980 | 24 | 0 |
| 1981 | 34 | 0 |
| 1982 | 30 | 0 |
| 1983 | 24 | 0 |
| 1984 | 40 | 0 |
| 1985 | 26 | 0 |
| 1986 | 12 | 0 |
| 1987 | 13 | 0 |
| 1988 | 14 | 0 |
| 1989 | 5 | 0 |
| 1990 | 8 | 0 |
| 1991 | 5 | 0 |
| 1992 | 4 | 0 |
| 1993 | 17 | 0 |
| 1994 | 15 | 0 |
| 1995 | 13 | 0 |
| 1996 | 14 | 0 |
| 1997 | 6 | 0 |
| 1998 | 7 | 0 |
| 1999 | 10 | 0 |
| 2000 | 8 | 0 |
| 2001 | 16 | 3 |
| 2002 | 15 | 14 |
| 2003 | 11 | 2 |
| 2004 | 7 | 4 |
| 2005 | 2 | 16 |
| 2006 | 6 | 11 |
| 2007 | 8 | 11 |
| 2008 | 5 | 12 |
| 2009 | 3 | 12 |
| 2010 | 8 | 25 |
| 2011 | 3 | 31 |
| 2012 | 4 | 30 |
| 2013 | 10 | 46 |
| 2014 | 13 | 65 |
| 2015 | 31 | 46 |
| 2016 | 40 | 27 |
| 2017 | 49 | 35 |
| 2018 | 30 | 36 |
| 2019 | 35 | 51 |
| 2020 | 38 | 62 |
| 2021 | 44 | 47 |
| 2022 | 33 | 29 |
| 2023 | 26 | 35 |
| 2024 | 27 | 32 |
| 2025 | 25 | 20 |
| 2026 | 11 | 18 |
By publication year. Applications have been published since 2001. 2026 runs to 8 Oct.
Subgroups
Granted patents
Recent patents
- Freeze concentration for urine-based fertilizer production29 Sep 2026US 12,747,194 B2The Regents of the University of Michigan
- Control system for building equipment with secondary strong prevention11 Aug 2026US 12,704,268 B2Tyco Fire & Security GmbH
- Simultaneous heating and chilling heat pump system11 Aug 2026US 12,704,298 B2Ace Machine Design Inc.
- Refrigeration systems with a first compressor system and a second compressor system7 Jul 2026US 12,674,608 B2Hill Phoenix, Inc.
- Refrigeration system having high-efficiency loop30 Jun 2026US 12,669,272 B2Copeland Corporation
- Chiller/heater process fluid temperature coordination1 Oct 2026US 2026/0298516 A1Trane International Inc.
- Outdoor unit of air conditioner, and air conditioner24 Sep 2026US 2026/0287217 A1Carrier Japan Corporation
- Indirect thermal management system for new energy vehicles24 Sep 2026US 2026/0287222 A1
- Heating device for cryogenic refrigerator17 Sep 2026US 2026/0276248 A1Ulvac Cryogenics Incorporated
- System and method for energy storage30 Jul 2026US 2026/0218991 A1
Most cited
By later US patents
- Heated or cooled dishware and drinkware169US 9,035,222 B2Oromo Technologies, Inc. · 2015
- Integrated air conditioning and power unit147US 5,899,085 AMcDonnell Douglas Corporation · 1999
- Fast changing heating-cooling device and method142US 5,522,870 AState of Israel, Ministry of Defense, Rafael-Armaments Development Authority · 1996
- Cooler device with integrated solar power and stereo system132US 6,305,185 B12001
- Residential heating, cooling and energy management system128US 4,909,041 AUHR Corporation · 1990