F25B 2600/022
For multi-stage operation
Official title: for multi-stage operation
F25B2600/022 (For multi-stage operation) appears on 26 US grants and 31 published applications in this corpus.
Search patents in F25B- Granted patents
- 26
- Published applications
- 31
- Assignees
- 21
- Inventors
- 78
- Latest grant
- 25 Aug 2026
Filings by year
| Year | Granted patents | Published applications |
|---|---|---|
| 1991 | 1 | 0 |
| 1992 | 0 | 0 |
| 1993 | 0 | 0 |
| 1994 | 0 | 0 |
| 1995 | 0 | 0 |
| 1996 | 0 | 0 |
| 1997 | 0 | 0 |
| 1998 | 0 | 0 |
| 1999 | 0 | 0 |
| 2000 | 0 | 0 |
| 2001 | 0 | 0 |
| 2002 | 1 | 0 |
| 2003 | 1 | 1 |
| 2004 | 1 | 0 |
| 2005 | 1 | 1 |
| 2006 | 0 | 2 |
| 2007 | 0 | 0 |
| 2008 | 0 | 0 |
| 2009 | 1 | 0 |
| 2010 | 0 | 1 |
| 2011 | 0 | 0 |
| 2012 | 0 | 1 |
| 2013 | 0 | 0 |
| 2014 | 1 | 1 |
| 2015 | 0 | 2 |
| 2016 | 0 | 1 |
| 2017 | 2 | 1 |
| 2018 | 0 | 4 |
| 2019 | 3 | 4 |
| 2020 | 3 | 1 |
| 2021 | 3 | 1 |
| 2022 | 1 | 4 |
| 2023 | 2 | 2 |
| 2024 | 2 | 2 |
| 2025 | 2 | 1 |
| 2026 | 1 | 1 |
By publication year. Applications have been published since 2001. 2026 runs to 8 Oct.
Recent patents
- CO2 refrigeration system with convertible compressors25 Aug 2026US 12,716,621 B2Hill Phoenix, Inc.
- Refrigeration cycle device15 Apr 2025US 12,276,444 B2Daikin Industries, Ltd.
- System and method for extending the operating range of a dynamic compressor11 Mar 2025US 12,247,773 B2Copeland Corporation
- Compression apparatus9 Apr 2024US 11,953,246 B2Daikin Industries, Ltd.
- System and method for extending the operating range of a dynamic compressor2 Apr 2024US 11,946,678 B2Copeland Corporation
- Noise Management System for Thermal Energy Storage Equipped Heat Pump Systems23 Apr 2026US 2026/0110474 A1Robert Bosch GmbH
- Refrigeration heat pump unit2 Oct 2025US 2025/0305728 A1Carrier Corporation
- System and method for extending the operating range of a dynamic compressor11 Jul 2024US 2024/0230197 A1Copeland Corporation
- Co2 refrigeration system with convertible compressors9 May 2024US 2024/0151437 A1Hill Phoenix, Inc.
- Compression apparatus31 Aug 2023US 2023/0272951 A1Daikin Industries, Ltd.
Most cited
By later US patents
- Method and apparatus for sequencing multistage systems of known relative capacities88US 6,540,148 B1Johnson Controls Technology Company · 2003
- Heat pump booster compressor arrangement17US 5,029,449 AGas Research Institute · 1991
- Boosted air source heat pump11US 6,931,871 B2Shaw Engineering Associates, LLC · 2005
- Control unit and method for two-stage reciprocating compressor6US 6,401,469 B1Carrier Corporation · 2002
- Two-stage linear compressor6US 7,478,539 B2Hussmann Corporation · 2009