F25B 2500/221
Preventing leaks from developing
F25B2500/221 (Preventing leaks from developing) appears on 90 US grants and 120 published applications in this corpus.
Search patents in F25B- Granted patents
- 90
- Published applications
- 120
- Assignees
- 52
- Inventors
- 251
- Latest grant
- 25 Aug 2026
Filings by year
| Year | Granted patents | Published applications |
|---|---|---|
| 1999 | 1 | 0 |
| 2000 | 1 | 0 |
| 2001 | 0 | 0 |
| 2002 | 2 | 2 |
| 2003 | 2 | 0 |
| 2004 | 2 | 4 |
| 2005 | 2 | 7 |
| 2006 | 4 | 2 |
| 2007 | 3 | 0 |
| 2008 | 1 | 3 |
| 2009 | 1 | 0 |
| 2010 | 0 | 2 |
| 2011 | 4 | 5 |
| 2012 | 0 | 3 |
| 2013 | 0 | 5 |
| 2014 | 1 | 2 |
| 2015 | 2 | 5 |
| 2016 | 5 | 3 |
| 2017 | 2 | 2 |
| 2018 | 2 | 4 |
| 2019 | 4 | 9 |
| 2020 | 9 | 8 |
| 2021 | 6 | 12 |
| 2022 | 6 | 16 |
| 2023 | 8 | 4 |
| 2024 | 16 | 8 |
| 2025 | 4 | 5 |
| 2026 | 2 | 9 |
By publication year. Applications have been published since 2001. 2026 runs to 8 Oct.
Recent patents
- Refrigerant leak mitigation system25 Aug 2026US 12,716,632 B2Trane International Inc.
- Sealing element for sealing fluid lines in a feed-through opening of a wall and sealing arrangement with the sealing element and method for mounting the sealing arrangement31 Mar 2026US 12,590,651 B2Hanon Systems
- Air-conditioning apparatus30 Dec 2025US 12,510,276 B2Mitsubishi Electric Corporation
- Connecting and disconnecting a cooling loop from a refrigeration system25 Nov 2025US 12,480,694 B2Edwards Vacuum LLC
- Flange-mounted inline valve with integrated electrical feed26 Aug 2025US 12,398,935 B2Parker-Hannifin Corporation
- HVAC Cap Assembly1 Oct 2026US 2026/0298391 A1
- Air-conditioning apparatus and evacuation method in air-conditioning apparatus20 Aug 2026US 2026/0243474 A1Mitsubishi Electric Corporation
- System and Method for Evacuating a Refrigerant Leak in an HVAC System30 Jul 2026US 2026/0218958 A1Lennox Industries Inc.
- Hot water supply air-conditioning system, method of controlling hot water supply air-conditioning system, and control apparatus23 Jul 2026US 2026/0210569 A1Daikin Industries, Ltd.
- Refrigeration cycle apparatus9 Jul 2026US 2026/0194272 A1Daikin Industries, Ltd.
Most cited
By later US patents
- Leakage restriction device for refrigeration cycle26US 6,443,502 B1Denso Corporation · 2002
- HVAC system with cooled dehydrator19US 6,915,646 B2Delphi Technologies, Inc. · 2005
- Composition and methods for injection of sealants into air conditioning and refrigeration systems18US 7,296,423 B2Brasscorp Limited · 2007
- Low refrigerant volume condenser for hydrocarbon refrigerant and ice making machine using same18US 9,052,130 B2Manitowoc Foodservice Companies, Inc. · 2015
- Refrigerant leak detector compressor17US 7,181,954 B2Kabushiki Kaisha Toshiba · 2007