Y02B 30/12
Hot water central heating systems using heat pumps
Y02B30/12 (Hot water central heating systems using heat pumps) appears on 374 US grants and 384 published applications in this corpus.
Search patents in Y02B- Granted patents
- 374
- Published applications
- 384
- Assignees
- 188
- Inventors
- 746
- Latest grant
- 24 Mar 2026
Filings by year
| Year | Granted patents | Published applications |
|---|---|---|
| 1976 | 4 | 0 |
| 1977 | 4 | 0 |
| 1978 | 4 | 0 |
| 1979 | 5 | 0 |
| 1980 | 5 | 0 |
| 1981 | 10 | 0 |
| 1982 | 6 | 0 |
| 1983 | 8 | 0 |
| 1984 | 4 | 0 |
| 1985 | 4 | 0 |
| 1986 | 4 | 0 |
| 1987 | 8 | 0 |
| 1988 | 6 | 0 |
| 1989 | 4 | 0 |
| 1990 | 5 | 0 |
| 1991 | 2 | 0 |
| 1992 | 1 | 0 |
| 1993 | 6 | 0 |
| 1994 | 1 | 0 |
| 1995 | 0 | 0 |
| 1996 | 2 | 0 |
| 1997 | 3 | 0 |
| 1998 | 7 | 0 |
| 1999 | 0 | 0 |
| 2000 | 1 | 0 |
| 2001 | 0 | 0 |
| 2002 | 0 | 1 |
| 2003 | 0 | 0 |
| 2004 | 0 | 3 |
| 2005 | 0 | 2 |
| 2006 | 0 | 1 |
| 2007 | 1 | 1 |
| 2008 | 3 | 4 |
| 2009 | 0 | 11 |
| 2010 | 3 | 23 |
| 2011 | 3 | 40 |
| 2012 | 3 | 33 |
| 2013 | 3 | 30 |
| 2014 | 14 | 32 |
| 2015 | 33 | 37 |
| 2016 | 33 | 36 |
| 2017 | 33 | 17 |
| 2018 | 35 | 24 |
| 2019 | 24 | 18 |
| 2020 | 16 | 20 |
| 2021 | 23 | 18 |
| 2022 | 9 | 12 |
| 2023 | 18 | 11 |
| 2024 | 9 | 5 |
| 2025 | 5 | 2 |
| 2026 | 2 | 3 |
By publication year. Applications have been published since 2001. 2026 runs to 8 Oct.
Recent patents
- Temperature control system coupled with heat pump water heater24 Mar 2026US 12,584,641 B2Zhongshan Amitime Electric Co., Ltd.
- Integrated demand water heating using a capacity modulated heat pump with desuperheater17 Mar 2026US 12,578,124 B2WaterFurnace International, Inc.
- Heat-pump water heater16 Dec 2025US 12,498,142 B2Mitsubishi Electric Corporation
- Combined space and water heating systems21 Oct 2025US 12,449,139 B2Rheem Manufacturing Company
- Air conditioning system19 Aug 2025US 12,392,521 B2Mitsubishi Electric Corporation
- Heat pump-type hot-water heating device6 Aug 2026US 2026/0227097 A1Fujitsu General Limited
- Integrated demand water heating using a capacity modulated heat pump with desuperheater25 Jun 2026US 2026/0177290 A1WaterFurnace International, Inc.
- Integrated water device applied to heat pump system, heat pump system, and control method thereof15 Jan 2026US 2026/0016194 A1Ningbo Aux Electric Co., Ltd.
- Apparatus and methods for heating water with refrigerant from air conditioning system10 Apr 2025US 2025/0116426 A1Rheem Manufacturing Company
- Conduit module coupled with heating or cooling module2 Jan 2025US 2025/0003609 A1WaterFurnace International, Inc.
Most cited
By later US patents
- Heat pump air conditioning system132US 4,420,947 AMitsubishi Denki Kabushiki Kaisha · 1983
- Residential heating, cooling and energy management system128US 4,909,041 AUHR Corporation · 1990
- Geothermal storage heating and cooling system91US 4,375,831 A1983
- Residential heating, cooling and energy management system89US 4,645,908 AUHR Corporation · 1987
- Three function heat pump system77US 4,693,089 APhenix Heat Pump Systems, Inc. · 1987