F25B 9/145
Pulse-tube cycle
Official title: {pulse-tube cycle}
F25B9/145 (Pulse-tube cycle) appears on 479 US grants and 465 published applications in this corpus.
Search patents in F25B- Granted patents
- 479
- Published applications
- 465
- Assignees
- 230
- Inventors
- 800
- Latest grant
- 6 Oct 2026
Filings by year
| Year | Granted patents | Published applications |
|---|---|---|
| 1978 | 1 | 0 |
| 1979 | 0 | 0 |
| 1980 | 0 | 0 |
| 1981 | 0 | 0 |
| 1982 | 1 | 0 |
| 1983 | 1 | 0 |
| 1984 | 1 | 0 |
| 1985 | 0 | 0 |
| 1986 | 3 | 0 |
| 1987 | 0 | 0 |
| 1988 | 2 | 0 |
| 1989 | 1 | 0 |
| 1990 | 2 | 0 |
| 1991 | 2 | 0 |
| 1992 | 4 | 0 |
| 1993 | 3 | 0 |
| 1994 | 10 | 0 |
| 1995 | 4 | 0 |
| 1996 | 7 | 0 |
| 1997 | 9 | 0 |
| 1998 | 9 | 0 |
| 1999 | 14 | 0 |
| 2000 | 11 | 0 |
| 2001 | 21 | 4 |
| 2002 | 25 | 10 |
| 2003 | 18 | 14 |
| 2004 | 17 | 22 |
| 2005 | 7 | 37 |
| 2006 | 25 | 21 |
| 2007 | 26 | 26 |
| 2008 | 14 | 22 |
| 2009 | 15 | 14 |
| 2010 | 1 | 7 |
| 2011 | 4 | 17 |
| 2012 | 4 | 10 |
| 2013 | 11 | 14 |
| 2014 | 6 | 17 |
| 2015 | 13 | 22 |
| 2016 | 10 | 17 |
| 2017 | 20 | 16 |
| 2018 | 22 | 15 |
| 2019 | 18 | 25 |
| 2020 | 16 | 26 |
| 2021 | 17 | 15 |
| 2022 | 26 | 21 |
| 2023 | 19 | 21 |
| 2024 | 13 | 17 |
| 2025 | 15 | 15 |
| 2026 | 11 | 20 |
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.
- Cryocooler and monitoring method for cryocooler8 Sep 2026US 12,729,894 B2Sumitomo Heavy Industries, Ltd.
- Device for the suppression of acoustic streaming in thermoacoustic systems25 Aug 2026US 12,716,622 B2Nederlandse Organisatie voor toegepast-natuurwetenschappelijk onderzoek TNO
- Systems and methods for cryogenic refrigeration7 Jul 2026US 12,673,274 B21372934 B. C. Ltd.
- Hybrid regenerator for cryocooler9 Jun 2026US 12,650,249 B1Boston Cryogenics LLC
- Cryocooler and monitoring method for cryocooler1 Oct 2026US 2026/0298517 A1Sumitomo Heavy Industries, Ltd.
- Cryogenic cooling system and an insert therefor17 Sep 2026US 2026/0276149 A1Oxford NanoScience Limited
- Cryogenic cooling system3 Sep 2026US 2026/0257609 A1
- Cryogenic Refrigeration Heat Exchange Systems and Methods3 Sep 2026US 2026/0258985 A1Boston Cryogenics LLC
- Microfluidic dilution refrigerator on a chip4 Jun 2026US 2026/0151767 A1The Regents of the University of California
Most cited
By later US patents
- Methods and apparatus to generate liquid ambulatory oxygen from an oxygen concentrator136US 5,979,440 ASeQual Technologies, Inc. · 1999
- Methods and apparatus to generate liquid ambulatory oxygen from an oxygen concentrator133US 6,698,423 B1SeQual Technologies, Inc. · 2004
- Methods and apparatus to generate liquid ambulatory oxygen from an oxygen concentrator101US 6,681,764 B1SeQual Technologies, Inc. · 2004
- Methods and apparatus to generate liquid ambulatory oxygen from an oxygen concentrator91US 6,651,653 B1SeQual Technologies, Inc. · 2003
- Electronics package with improved thermal management by thermoacoustic heat pumping68US 5,303,555 AInternational Business Machines Corporation · 1994