F25B 2341/06
Details of flow restrictors or expansion valves
F25B2341/06 (Details of flow restrictors or expansion valves) appears on 462 US grants and 408 published applications in this corpus.
Search patents in F25B- Granted patents
- 462
- Published applications
- 408
- Assignees
- 181
- Inventors
- 877
- Latest grant
- 25 Aug 2026
Filings by year
| Year | Granted patents | Published applications |
|---|---|---|
| 1976 | 2 | 0 |
| 1977 | 2 | 0 |
| 1978 | 2 | 0 |
| 1979 | 1 | 0 |
| 1980 | 0 | 0 |
| 1981 | 1 | 0 |
| 1982 | 2 | 0 |
| 1983 | 0 | 0 |
| 1984 | 3 | 0 |
| 1985 | 2 | 0 |
| 1986 | 2 | 0 |
| 1987 | 1 | 0 |
| 1988 | 2 | 0 |
| 1989 | 6 | 0 |
| 1990 | 4 | 0 |
| 1991 | 6 | 0 |
| 1992 | 3 | 0 |
| 1993 | 4 | 0 |
| 1994 | 5 | 0 |
| 1995 | 4 | 0 |
| 1996 | 5 | 0 |
| 1997 | 8 | 0 |
| 1998 | 10 | 0 |
| 1999 | 16 | 0 |
| 2000 | 23 | 0 |
| 2001 | 27 | 10 |
| 2002 | 30 | 27 |
| 2003 | 28 | 14 |
| 2004 | 9 | 25 |
| 2005 | 16 | 15 |
| 2006 | 7 | 17 |
| 2007 | 10 | 20 |
| 2008 | 5 | 12 |
| 2009 | 6 | 6 |
| 2010 | 8 | 17 |
| 2011 | 6 | 7 |
| 2012 | 7 | 4 |
| 2013 | 4 | 12 |
| 2014 | 5 | 8 |
| 2015 | 10 | 17 |
| 2016 | 6 | 23 |
| 2017 | 16 | 14 |
| 2018 | 17 | 30 |
| 2019 | 19 | 22 |
| 2020 | 19 | 28 |
| 2021 | 21 | 24 |
| 2022 | 21 | 18 |
| 2023 | 19 | 17 |
| 2024 | 15 | 4 |
| 2025 | 9 | 9 |
| 2026 | 8 | 8 |
By publication year. Applications have been published since 2001. 2026 runs to 8 Oct.
Subgroups
Granted patents
- F25B 2341/068Expansion valves combined with a sensorIndexing code261
- F25B 2341/063Feed forward expansion valvesIndexing code89
- F25B 2341/062Capillary expansion valvesIndexing code61
- F25B 2341/067Expansion valves having a pilot valveIndexing code19
- F25B 2341/064Superheater expansion valvesIndexing code13
Recent patents
- Electric expansion valve and refrigeration cycle device25 Aug 2026US 12,716,627 B2Denso Corporation
- Air conditioning system14 Jul 2026US 12,680,742 B2Guangdong Meizhi Precision-Manufacturing Co., Ltd.
- Thermoplastic composition for monolayer tube, air-conditioning circuit and method for preparing the composition16 Jun 2026US 12,655,291 B2Hutchinson
- Axial three-way modulating valve26 May 2026US 12,638,089 B2Mueller Refrigeration, LLC
- Electronic expansion valve and refrigeration device5 May 2026US 12,618,476 B2Guangdong Welling Motor Manufacturing Co., Ltd.
- Electronic expansion valve13 Aug 2026US 2026/0235209 A1Zhejiang Dunan Artificial Environment Co., Ltd.
- Electronic expansion valve6 Aug 2026US 2026/0226995 A1Zhejiang Dunan Artificial Environment Co., Ltd.
- Electronic expansion valve6 Aug 2026US 2026/0227106 A1Zhejiang Dunan Artificial Environment Co., Ltd.
- Evaporator structure, ice maker, and method for heat exchange16 Jul 2026US 2026/0202106 A1Ningbo Hicon Intelligent Technology Co., Ltd.
- Sensor-integrated expansion valve26 Feb 2026US 2026/0055939 A1Hanon Systems
Most cited
By later US patents
- Apparatus for and method of automatically adjusting the superheat setting of a thermostatic expansion valve93US 4,467,613 AEmerson Electric Co. · 1984
- Control device for refrigeration cycle89US 4,499,739 AMitsubishi Denki Kabushiki Kaisha · 1985
- Apparatus and method for controlling the temperature of an electronic device under test84US 6,668,570 B2Kryotech, Inc. · 2003
- Low refrigerant charge detection using thermal expansion valve stroke measurement77US 5,243,829 AGeneral Electric Company · 1993
- Refrigeration expansion control69US 5,904,049 AGeneral Electric Company · 1999