F25B 2600/2519
On-off valves
F25B2600/2519 (On-off valves) appears on 340 US grants and 471 published applications in this corpus.
Search patents in F25B- Granted patents
- 340
- Published applications
- 471
- Assignees
- 159
- Inventors
- 958
- Latest grant
- 25 Aug 2026
Filings by year
| Year | Granted patents | Published applications |
|---|---|---|
| 1992 | 1 | 0 |
| 1993 | 1 | 0 |
| 1994 | 0 | 0 |
| 1995 | 0 | 0 |
| 1996 | 0 | 0 |
| 1997 | 0 | 0 |
| 1998 | 1 | 0 |
| 1999 | 0 | 0 |
| 2000 | 1 | 0 |
| 2001 | 0 | 0 |
| 2002 | 0 | 2 |
| 2003 | 1 | 2 |
| 2004 | 2 | 6 |
| 2005 | 3 | 8 |
| 2006 | 4 | 9 |
| 2007 | 4 | 3 |
| 2008 | 0 | 7 |
| 2009 | 4 | 4 |
| 2010 | 2 | 4 |
| 2011 | 2 | 3 |
| 2012 | 1 | 7 |
| 2013 | 4 | 13 |
| 2014 | 4 | 10 |
| 2015 | 8 | 26 |
| 2016 | 6 | 9 |
| 2017 | 14 | 16 |
| 2018 | 16 | 25 |
| 2019 | 16 | 42 |
| 2020 | 31 | 44 |
| 2021 | 38 | 43 |
| 2022 | 42 | 58 |
| 2023 | 36 | 41 |
| 2024 | 42 | 43 |
| 2025 | 44 | 24 |
| 2026 | 12 | 22 |
By publication year. Applications have been published since 2001. 2026 runs to 8 Oct.
Recent patents
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- Multi-type air-conditioning device8 Oct 2026US 2026/0309383 A1
- Air conditioner10 Sep 2026US 2026/0266489 A1Carrier Japan Corporation
- Oil distribution system for multiple-compressor systems20 Aug 2026US 2026/0243242 A1
- Air-conditioning apparatus and evacuation method in air-conditioning apparatus20 Aug 2026US 2026/0243474 A1Mitsubishi Electric Corporation
- Refrigerator20 Aug 2026US 2026/0243485 A1Daikin Industries, Ltd.
Most cited
By later US patents
- Energy efficient air conditioning system utilizing a variable speed compressor and integrally-related expansion valves98US 5,177,972 ALiebert Corporation · 1993
- Method for refrigerant pressure control in refrigeration systems37US 7,559,207 B2York International Corporation · 2009
- Flash tank design and control for heat pumps33US 7,484,374 B2Emerson Climate Technologies, Inc. · 2009
- Expansion valve integrated with electromagnetic valve and refrigeration cycle employing the same28US 5,826,438 ADenso Corporation · 1998
- Hot gas heat treatment system24US 6,948,327 B2Carrier Commercial Refrigeration, Inc. · 2005