F25B 2309/1425
Pulse tubes with basic schematic including several pulse tubes
F25B2309/1425 (Pulse tubes with basic schematic including several pulse tubes) appears on 32 US grants and 23 published applications in this corpus.
Search patents in F25B- Granted patents
- 32
- Published applications
- 23
- Assignees
- 30
- Inventors
- 75
- Latest grant
- 6 Oct 2026
Filings by year
| Year | Granted patents | Published applications |
|---|---|---|
| 1990 | 1 | 0 |
| 1991 | 0 | 0 |
| 1992 | 1 | 0 |
| 1993 | 1 | 0 |
| 1994 | 2 | 0 |
| 1995 | 0 | 0 |
| 1996 | 1 | 0 |
| 1997 | 0 | 0 |
| 1998 | 3 | 0 |
| 1999 | 1 | 0 |
| 2000 | 0 | 0 |
| 2001 | 2 | 0 |
| 2002 | 1 | 0 |
| 2003 | 2 | 0 |
| 2004 | 1 | 0 |
| 2005 | 0 | 4 |
| 2006 | 1 | 2 |
| 2007 | 2 | 0 |
| 2008 | 2 | 1 |
| 2009 | 1 | 2 |
| 2010 | 0 | 0 |
| 2011 | 0 | 0 |
| 2012 | 1 | 0 |
| 2013 | 1 | 1 |
| 2014 | 0 | 2 |
| 2015 | 0 | 2 |
| 2016 | 2 | 2 |
| 2017 | 1 | 0 |
| 2018 | 1 | 1 |
| 2019 | 2 | 2 |
| 2020 | 1 | 0 |
| 2021 | 0 | 0 |
| 2022 | 0 | 1 |
| 2023 | 0 | 0 |
| 2024 | 0 | 1 |
| 2025 | 0 | 2 |
| 2026 | 1 | 0 |
By publication year. Applications have been published since 2001. 2026 runs to 8 Oct.
Recent patents
- Hybrid double-inlet valve for pulse tube cryocooler6 Oct 2026US 12,753,954 B2Sumitomo (SHI) Cryogenics of America, Inc.
- System for warming-up and cooling-down a superconducting magnet7 Jul 2020US 10,704,809 B2Sumitomo (SHI) Cryogenics of America, Inc.
- Thermo-acoustic heat pump6 Aug 2019US 10,371,418 B2Stichting Energieonderzoek Centrum Nederland
- Thermoacoustic heating device26 Mar 2019US 10,240,822 B2Isuzu Motors Limited
- Pulse tube refrigerator28 Aug 2018US 10,060,656 B2Sumitomo Heavy Industries, Ltd.
- Cryocooling system26 Jun 2025US 2025/0207824 A1Government of the United States of America, AS Represented By the Secretary of Commerce
- Acoustic power modulation in a thermoacoustic machine6 Mar 2025US 2025/0075948 A1Equium Groupe
- Dynamic acoustic impedance matching for cryocoolers15 Aug 2024US 2024/0271834 A1The Regents of the University of Colorado, a body corporate
- Hybrid double-inlet valve for pulse tube cryocooler17 Feb 2022US 2022/0049878 A1Sumitomo (SHI) Cryogenics of America, Inc.
- System for warming-up and cooling-down a superconducting magnet17 Oct 2019US 2019/0316813 A1Sumitomo (SHI) Cryogenics of America, Inc.
Most cited
By later US patents
- Acoustic cryocooler58US 4,953,366 AThe United States of America as represented by the United States Department of Energy · 1990
- Pulse tube refrigerating system35US 5,275,002 AAisin Newhard Co., Ltd. · 1994
- Pulse tube refrigerating system33US 5,269,147 AAisin Seiki Kabushiki Kaisha · 1993
- Pulse tube refrigerator24US 5,974,807 ASuzuki Shokan Co., Ltd. · 1999
- Pulse tube refrigerator19US 5,845,498 AAisin Seiki Kabushiki Kaisha · 1998