F25B 2309/1414
Pulse-tube cycles characterised by pulse tube details
F25B2309/1414 (Pulse-tube cycles characterised by pulse tube details) appears on 27 US grants and 23 published applications in this corpus.
Search patents in F25B- Granted patents
- 27
- Published applications
- 23
- Assignees
- 23
- Inventors
- 60
- Latest grant
- 6 Oct 2026
Filings by year
| Year | Granted patents | Published applications |
|---|---|---|
| 1994 | 2 | 0 |
| 1995 | 1 | 0 |
| 1996 | 0 | 0 |
| 1997 | 3 | 0 |
| 1998 | 1 | 0 |
| 1999 | 1 | 0 |
| 2000 | 0 | 0 |
| 2001 | 0 | 0 |
| 2002 | 1 | 0 |
| 2003 | 1 | 0 |
| 2004 | 1 | 2 |
| 2005 | 0 | 2 |
| 2006 | 2 | 1 |
| 2007 | 0 | 0 |
| 2008 | 1 | 2 |
| 2009 | 1 | 1 |
| 2010 | 0 | 0 |
| 2011 | 0 | 0 |
| 2012 | 0 | 0 |
| 2013 | 2 | 0 |
| 2014 | 0 | 2 |
| 2015 | 1 | 1 |
| 2016 | 0 | 1 |
| 2017 | 0 | 0 |
| 2018 | 0 | 0 |
| 2019 | 1 | 3 |
| 2020 | 0 | 5 |
| 2021 | 2 | 0 |
| 2022 | 4 | 1 |
| 2023 | 0 | 1 |
| 2024 | 0 | 0 |
| 2025 | 0 | 1 |
| 2026 | 2 | 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.
- Gas energized seal for Gifford-McMahon expander26 May 2026US 12,638,220 B2Sumitomo (Shi) Cryogenic of America, Inc.
- Cryocooler and cryogenic system17 May 2022US 11,333,408 B2Sumitomo Heavy Industries, Ltd.
- Cryocooler, cryocooler diagnosis device, and cryocooler diagnosis method17 May 2022US 11,333,409 B2Sumitomo Heavy Industries, Ltd.
- Method of disassembling a cold head and lifting-up jig22 Mar 2022US 11,278,994 B2Sumitomo Heavy Industries, Ltd.
- Cryogenic refrigeration device2 Jan 2025US 2025/0003644 A1L Air Liquide, Societe Anonyme Pour L'Etude et L'Exploitation des Procedes Georges Claude
- Gas energized seal for gifford-mcmahon expander27 Apr 2023US 2023/0129966 A1Sumitomo (SHI) Cryogenics of America, Inc.
- Hybrid double-inlet valve for pulse tube cryocooler17 Feb 2022US 2022/0049878 A1Sumitomo (SHI) Cryogenics of America, Inc.
- Method of disassembling a cold head and lifting-up jig20 Aug 2020US 2020/0262013 A1Sumitomo Heavy Industries, Ltd.
- Displacer assembly and cryocooler20 Aug 2020US 2020/0263676 A1Sumitomo Heavy Industries, Ltd.
Most cited
By later US patents
- Multi-bypass pulse tube refrigerator44US 5,295,355 ACryogenic Laboratory of Chinese Academy of Sciences · 1994
- Pulse tube refrigerator39US 5,412,952 AKabushiki Kaisha Toshiba · 1995
- Pulse tube refrigerator30US 5,335,505 AKabushiki Kaisha Toshiba · 1994
- Tapered pulse tube for pulse tube refrigerators25US 5,953,920 AThe Regent of the University of California · 1999
- Concentric pulse tube expander with vacuum insulator19US 5,680,768 AHughes Electronics Corporation · 1997