F25B 2309/1413
Pulse-tube cycles characterised by performance, geometry or theory
F25B2309/1413 (Pulse-tube cycles characterised by performance, geometry or theory) appears on 53 US grants and 47 published applications in this corpus.
Search patents in F25B- Granted patents
- 53
- Published applications
- 47
- Assignees
- 43
- Inventors
- 128
- Latest grant
- 18 Jul 2023
Filings by year
| Year | Granted patents | Published applications |
|---|---|---|
| 1984 | 1 | 0 |
| 1985 | 0 | 0 |
| 1986 | 1 | 0 |
| 1987 | 0 | 0 |
| 1988 | 0 | 0 |
| 1989 | 0 | 0 |
| 1990 | 1 | 0 |
| 1991 | 0 | 0 |
| 1992 | 1 | 0 |
| 1993 | 0 | 0 |
| 1994 | 2 | 0 |
| 1995 | 1 | 0 |
| 1996 | 1 | 0 |
| 1997 | 3 | 0 |
| 1998 | 2 | 0 |
| 1999 | 2 | 0 |
| 2000 | 3 | 0 |
| 2001 | 0 | 0 |
| 2002 | 2 | 2 |
| 2003 | 3 | 1 |
| 2004 | 2 | 3 |
| 2005 | 0 | 3 |
| 2006 | 2 | 6 |
| 2007 | 1 | 1 |
| 2008 | 3 | 5 |
| 2009 | 3 | 2 |
| 2010 | 0 | 0 |
| 2011 | 0 | 2 |
| 2012 | 0 | 1 |
| 2013 | 3 | 3 |
| 2014 | 0 | 4 |
| 2015 | 2 | 4 |
| 2016 | 1 | 0 |
| 2017 | 2 | 1 |
| 2018 | 4 | 1 |
| 2019 | 0 | 1 |
| 2020 | 2 | 2 |
| 2021 | 1 | 1 |
| 2022 | 1 | 1 |
| 2023 | 3 | 0 |
| 2024 | 0 | 2 |
| 2025 | 0 | 1 |
By publication year. Applications have been published since 2001.
Recent patents
- Thermoacoustic refrigerator18 Jul 2023US 11,703,255 B2Sintokogio, Ltd.
- Double-ended thermoacoustic heat exchanger16 May 2023US 11,649,991 B2The Government of the United States of America, as represented by the Secretary of Homeland Security
- Cryocooler31 Jan 2023US 11,566,821 B2Sumitomo Heavy Industries, Ltd.
- Cryocooler, cryocooler diagnosis device, and cryocooler diagnosis method17 May 2022US 11,333,409 B2Sumitomo Heavy Industries, Ltd.
- Cryogenic cooling apparatus5 Oct 2021US 11,137,193 B2Kabushiki Kaisha Toshiba
- Acoustic power modulation in a thermoacoustic machine6 Mar 2025US 2025/0075948 A1Equium Groupe
- Pulse tube cryocooler and method for cooling down pulse tube cryocooler13 Jun 2024US 2024/0191913 A1Sumitomo Heavy Industries, Ltd.
- Cryocooler and method for operating cryocooler2 May 2024US 2024/0142149 A1Sumitomo Heavy Industries, Ltd.
- Double-ended thermoacoustic heat exchanger1 Sep 2022US 2022/0275978 A1The Government of the United States of America, as represented by the Secretary of Homeland Security
- Thermoacoustic refrigerator30 Dec 2021US 2021/0404713 A1Sintokogio, Ltd.
Most cited
By later US patents
- Intrinsically irreversible heat engine59US 4,489,553 AThe United States of America as represented by the United States Department of Energy · 1984
- Acoustic cryocooler58US 4,953,366 AThe United States of America as represented by the United States Department of Energy · 1990
- Traveling-wave device with mass flux suppression49US 6,032,464 AThe Regents of the University of California · 2000
- 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