F25B 2313/003
Indoor unit with water as a heat sink or heat source
F25B2313/003 (Indoor unit with water as a heat sink or heat source) appears on 247 US grants and 362 published applications in this corpus.
Search patents in F25B- Granted patents
- 247
- Published applications
- 362
- Assignees
- 78
- Inventors
- 527
- Latest grant
- 1 Sep 2026
Filings by year
| Year | Granted patents | Published applications |
|---|---|---|
| 1978 | 1 | 0 |
| 1979 | 0 | 0 |
| 1980 | 0 | 0 |
| 1981 | 0 | 0 |
| 1982 | 0 | 0 |
| 1983 | 0 | 0 |
| 1984 | 0 | 0 |
| 1985 | 1 | 0 |
| 1986 | 0 | 0 |
| 1987 | 0 | 0 |
| 1988 | 1 | 0 |
| 1989 | 0 | 0 |
| 1990 | 1 | 0 |
| 1991 | 0 | 0 |
| 1992 | 0 | 0 |
| 1993 | 0 | 0 |
| 1994 | 0 | 0 |
| 1995 | 0 | 0 |
| 1996 | 0 | 0 |
| 1997 | 0 | 0 |
| 1998 | 0 | 0 |
| 1999 | 0 | 0 |
| 2000 | 0 | 0 |
| 2001 | 0 | 0 |
| 2002 | 0 | 0 |
| 2003 | 1 | 0 |
| 2004 | 0 | 0 |
| 2005 | 0 | 1 |
| 2006 | 0 | 2 |
| 2007 | 0 | 0 |
| 2008 | 0 | 4 |
| 2009 | 0 | 2 |
| 2010 | 6 | 2 |
| 2011 | 1 | 9 |
| 2012 | 0 | 14 |
| 2013 | 0 | 11 |
| 2014 | 5 | 13 |
| 2015 | 5 | 25 |
| 2016 | 10 | 12 |
| 2017 | 24 | 15 |
| 2018 | 15 | 12 |
| 2019 | 13 | 13 |
| 2020 | 12 | 37 |
| 2021 | 20 | 42 |
| 2022 | 36 | 36 |
| 2023 | 24 | 32 |
| 2024 | 37 | 38 |
| 2025 | 26 | 22 |
| 2026 | 8 | 20 |
By publication year. Applications have been published since 2001. 2026 runs to 8 Oct.
Recent patents
- Air conditioner1 Sep 2026US 12,723,784 B2LG Electronics Inc.
- Multi-connected air conditioner with refrigerant and water system25 Aug 2026US 12,716,609 B2Tsinghua University
- Multi-energy coupled cooling/heating system for buildings in long-term cooling region and operation method21 Apr 2026US 12,607,389 B2North China Municipal Engineering Design & Research Institute Co., Ltd.
- Air-conditioning apparatus7 Apr 2026US 12,595,945 B2Mitsubishi Electric Corporation
- Refrigeration cycle apparatus and leakage inspection method for refrigerant piping of refrigeration cycle apparatus31 Mar 2026US 12,590,743 B2Carrier Japan Corporation
- Systems and methods for integrating a water heating unit and a heat pump1 Oct 2026US 2026/0298489 A1
- Systems and methods for integrating a water heating unit and a heat pump1 Oct 2026US 2026/0298490 A1
- Refrigeration cycle apparatus1 Oct 2026US 2026/0298506 A1Mitsubishi Electric Corporation
- Outdoor unit20 Aug 2026US 2026/0243451 A1Daikin Europe N.V.
- Temperature adjustment system30 Jul 2026US 2026/0218947 A1Daikin Europe N.V.
Most cited
By later US patents
- Control device for heat pump with hot-water supply facility66US 4,943,003 ASanden Corporation · 1990
- Heat pump refrigeration circuit with liquid heating capability51US 4,528,822 AAmerican Standard Inc. · 1985
- Air conditioner having hot/cold water producing device36US 6,668,572 B1Samsung Electronics Co., Ltd. · 2003
- Heat pump system with multi-stage compression33US 7,654,104 B2Purdue Research Foundation · 2010
- Multi-source heat pump HVAC system32US 4,100,763 AInternational Telephone and Telegraph Corporation · 1978