F25B 2313/008
Refrigerant heaters
F25B2313/008 (Refrigerant heaters) appears on 52 US grants and 41 published applications in this corpus.
Search patents in F25B- Granted patents
- 52
- Published applications
- 41
- Assignees
- 24
- Inventors
- 137
- Latest grant
- 19 May 2026
Filings by year
| Year | Granted patents | Published applications |
|---|---|---|
| 1978 | 1 | 0 |
| 1979 | 1 | 0 |
| 1980 | 1 | 0 |
| 1981 | 0 | 0 |
| 1982 | 0 | 0 |
| 1983 | 0 | 0 |
| 1984 | 4 | 0 |
| 1985 | 1 | 0 |
| 1986 | 0 | 0 |
| 1987 | 0 | 0 |
| 1988 | 1 | 0 |
| 1989 | 0 | 0 |
| 1990 | 1 | 0 |
| 1991 | 2 | 0 |
| 1992 | 1 | 0 |
| 1993 | 1 | 0 |
| 1994 | 3 | 0 |
| 1995 | 0 | 0 |
| 1996 | 0 | 0 |
| 1997 | 0 | 0 |
| 1998 | 0 | 0 |
| 1999 | 1 | 0 |
| 2000 | 2 | 0 |
| 2001 | 1 | 0 |
| 2002 | 0 | 0 |
| 2003 | 0 | 1 |
| 2004 | 0 | 0 |
| 2005 | 0 | 0 |
| 2006 | 0 | 2 |
| 2007 | 0 | 0 |
| 2008 | 1 | 4 |
| 2009 | 1 | 1 |
| 2010 | 2 | 3 |
| 2011 | 0 | 4 |
| 2012 | 1 | 6 |
| 2013 | 1 | 1 |
| 2014 | 0 | 0 |
| 2015 | 4 | 1 |
| 2016 | 3 | 0 |
| 2017 | 1 | 3 |
| 2018 | 1 | 1 |
| 2019 | 1 | 2 |
| 2020 | 3 | 4 |
| 2021 | 0 | 3 |
| 2022 | 6 | 3 |
| 2023 | 1 | 0 |
| 2024 | 2 | 2 |
| 2025 | 1 | 0 |
| 2026 | 2 | 0 |
By publication year. Applications have been published since 2001. 2026 runs to 8 Oct.
Recent patents
- Electric component unit, and heat source unit for refrigeration cycle apparatus19 May 2026US 12,631,373 B2Daikin Industries, Ltd.
- Hybrid heat-pump system6 Jan 2026US 12,516,856 B2Copeland Corporation
- Refrigerant-containing composition, use of same, refrigerator having same, operation method for said refrigerator, and refrigeration cycle device equipped with same14 Oct 2025US 12,441,922 B2Daikin Industries, Ltd.
- Continuous heating control system and method, and air-conditioning device16 Jul 2024US 12,038,211 B2Gree Electric Appliances, Inc. of Zhuhai
- Hybrid heat-pump system26 Mar 2024US 11,940,188 B2Copeland Corporation
- Electric component unit, and heat source unit for refrigeration cycle apparatus18 Jul 2024US 2024/0240840 A1Daikin Industries, Ltd.
- Hybrid Heat-Pump System6 Jun 2024US 2024/0183584 A1Copeland Corporation
- Continuous Heating Control System and Method, and Air-Conditioning Device29 Dec 2022US 2022/0412621 A1Gree Electric Appliances, Inc. of Zhuhai
- Hybrid Heat-Pump System29 Sep 2022US 2022/0307737 A1Emerson Climate Technologies, Inc.
- Refrigerant-containing composition, use of same, refrigerator having same, operation method for said refrigerator, and refrigeration cycle device equipped with same7 Apr 2022US 2022/0106513 A1Daikin Industries, Ltd.
Most cited
By later US patents
- Air conditioning apparatus having a dehumidifying operation function50US 5,305,822 AKabushiki Kaisha Toshiba · 1994
- Heat pump type airconditioner43US 4,441,901 AMitsubishi Denki Kabushiki Kaisha · 1984
- Apparatus and method for combined solar and heat pump heating and cooling system38US 4,165,037 A1979
- Air conditioning apparatus with dehumidifying operation function34US 5,231,845 AKabushiki Kaisha Toshiba · 1993
- Refrigerant heating type air conditioner24US 5,323,844 AKabushiki Kaisha Toshiba · 1994