F24H 15/305
Control of valves
Official title: Control of valves (of heat pumps F24H15/385, F24H15/39)
F24H15/305 (Control of valves) appears on 670 US grants and 830 published applications in this corpus.
Search patents in F24H- Granted patents
- 670
- Published applications
- 830
- Assignees
- 291
- Inventors
- 1,376
- Latest grant
- 6 Oct 2026
Filings by year
| Year | Granted patents | Published applications |
|---|---|---|
| 1976 | 2 | 0 |
| 1977 | 3 | 0 |
| 1978 | 6 | 0 |
| 1979 | 4 | 0 |
| 1980 | 2 | 0 |
| 1981 | 4 | 0 |
| 1982 | 6 | 0 |
| 1983 | 2 | 0 |
| 1984 | 3 | 0 |
| 1985 | 5 | 0 |
| 1986 | 5 | 0 |
| 1987 | 7 | 0 |
| 1988 | 3 | 0 |
| 1989 | 1 | 0 |
| 1990 | 3 | 0 |
| 1991 | 4 | 0 |
| 1992 | 3 | 0 |
| 1993 | 4 | 0 |
| 1994 | 5 | 0 |
| 1995 | 2 | 0 |
| 1996 | 2 | 0 |
| 1997 | 3 | 0 |
| 1998 | 5 | 0 |
| 1999 | 6 | 0 |
| 2000 | 15 | 0 |
| 2001 | 3 | 3 |
| 2002 | 4 | 5 |
| 2003 | 3 | 4 |
| 2004 | 5 | 7 |
| 2005 | 9 | 11 |
| 2006 | 7 | 11 |
| 2007 | 2 | 18 |
| 2008 | 7 | 3 |
| 2009 | 6 | 20 |
| 2010 | 14 | 36 |
| 2011 | 16 | 27 |
| 2012 | 17 | 27 |
| 2013 | 20 | 36 |
| 2014 | 18 | 39 |
| 2015 | 25 | 39 |
| 2016 | 31 | 40 |
| 2017 | 24 | 38 |
| 2018 | 37 | 59 |
| 2019 | 53 | 52 |
| 2020 | 42 | 52 |
| 2021 | 42 | 62 |
| 2022 | 60 | 40 |
| 2023 | 46 | 33 |
| 2024 | 24 | 70 |
| 2025 | 28 | 55 |
| 2026 | 22 | 43 |
By publication year. Applications have been published since 2001. 2026 runs to 8 Oct.
Subgroups
Granted patents
Recent patents
- Water heater having highly efficient and compact heat exchanger6 Oct 2026US RE51,053 E1A. O. Smith Corporation
- Water heaters with computing elements as a network11 Aug 2026US 12,704,888 B2
- Water heater and method for controlling the same4 Aug 2026US 12,701,684 B2LG Electronics Inc.
- Leak detection and automated shutoff systems using water-soluble materials21 Jul 2026US 12,687,321 B2Rheem Manufacturing Company
- Fluid heating system with combustion trim learning14 Jul 2026US 12,680,727 B2A. O. Smith Corporation
- Energy buffering using a heat pump8 Oct 2026US 2026/0309339 A1Mixergy Limited
- Water heating system and device8 Oct 2026US 2026/0309340 A1Mixergy Limited
- Heating device for a steam generator8 Oct 2026US 2026/0309366 A1Yuyao Hengxi Technology Co., Ltd.
- Water heater appliance and a reserve tank mode thereof1 Oct 2026US 2026/0298500 A1Haier US Appliance Solutions, Inc.
- Water supply unit and aircraft having a water supply unit24 Sep 2026US 2026/0287209 A1Airbus Operations GmbH
Most cited
By later US patents
- Integrated appliance control system186US 6,059,195 ATridelta Industries, Inc. · 2000
- Automatic hot water supply apparatus152US 5,058,804 AMatsushita Electric Industrial Co., Ltd. · 1991
- Control system for a water heater150US 5,797,358 AAOS Holding Company · 1998
- Automated water heater flushing and monitoring system122US 10,047,974 B1State Farm Mutual Automobile Insurance Company · 2018
- Automated water heater flushing and monitoring system121US 10,480,825 B1State Farm Mutual Automobile Insurance Company · 2019