F25B 41/347
With the valve member being opened and closed cyclically
Official title: {with the valve member being opened and closed cyclically, e.g. with pulse width modulation}
F25B41/347 (With the valve member being opened and closed cyclically) appears on 96 US grants and 50 published applications in this corpus.
Search patents in F25B- Granted patents
- 96
- Published applications
- 50
- Assignees
- 51
- Inventors
- 195
- Latest grant
- 25 Nov 2025
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 | 1 | 0 |
| 1985 | 2 | 0 |
| 1986 | 3 | 0 |
| 1987 | 5 | 0 |
| 1988 | 3 | 0 |
| 1989 | 6 | 0 |
| 1990 | 3 | 0 |
| 1991 | 3 | 0 |
| 1992 | 3 | 0 |
| 1993 | 4 | 0 |
| 1994 | 1 | 0 |
| 1995 | 9 | 0 |
| 1996 | 2 | 0 |
| 1997 | 1 | 0 |
| 1998 | 2 | 0 |
| 1999 | 4 | 0 |
| 2000 | 1 | 0 |
| 2001 | 2 | 0 |
| 2002 | 3 | 1 |
| 2003 | 4 | 1 |
| 2004 | 0 | 2 |
| 2005 | 1 | 2 |
| 2006 | 2 | 3 |
| 2007 | 0 | 2 |
| 2008 | 1 | 5 |
| 2009 | 1 | 2 |
| 2010 | 2 | 5 |
| 2011 | 2 | 5 |
| 2012 | 4 | 1 |
| 2013 | 4 | 2 |
| 2014 | 1 | 0 |
| 2015 | 2 | 1 |
| 2016 | 0 | 2 |
| 2017 | 1 | 1 |
| 2018 | 0 | 1 |
| 2019 | 2 | 2 |
| 2020 | 2 | 1 |
| 2021 | 2 | 4 |
| 2022 | 1 | 3 |
| 2023 | 2 | 1 |
| 2024 | 2 | 2 |
| 2025 | 1 | 1 |
By publication year. Applications have been published since 2001.
Recent patents
- Electronic expansion valve25 Nov 2025US 12,480,582 B2Zhejiang Dunan Artificial Environment Co., Ltd.
- Heat exchanger assembly with valve10 Dec 2024US 12,163,708 B2Modine Manufacturing Company
- Refrigerant6 Feb 2024US 11,891,560 B2Weiss Technik GmbH
- Digital controlled solenoid capillary tube metering devices of refrigeration systems19 Sep 2023US 11,761,694 B2
- Heat exchanger assembly with valve5 Sep 2023US 11,747,063 B2Modine Manufacturing Company
- Cold Exchnage System20 Mar 2025US 2025/0093083 A1Siemens Schweiz AG
- Electronic Expansion Valve21 Nov 2024US 2024/0384799 A1Zhejiang Dunan Artificial Environment Co., Ltd.
- Air conditioning apparatus29 Feb 2024US 2024/0068699 A1Mitsubishi Electric Corporation
- Heat exchanger assembly with valve16 Nov 2023US 2023/0366597 A1Modine Manufacturing Company
- Digital Controlled Solenoid Capillary Tube Metering Devices Of Refrigeration Systems6 Oct 2022US 2022/0316774 A1
Most cited
By later US patents
- Refrigeration control system112US 4,112,703 ABorg-Warner Corporation · 1978
- Refrigerant level control in a refrigeration system98US 5,655,379 AGeneral Electric Company · 1997
- Refrigerant flow rate control based on liquid level in simple vapor compression refrigeration cycles97US 5,435,145 AGeneral Electric Company · 1995
- Refrigerant flow rate control based on liquid level in dual evaporator two-stage refrigeration cycles89US 5,431,026 AGeneral Electric Company · 1995
- Refrigeration system with electrically controlled expansion valve89US 5,546,757 AGeneral Electric Company · 1996