F25B 2309/1428
Control of a stirling refrigeration machine
Official title: Control of a Stirling refrigeration machine
F25B2309/1428 (Control of a stirling refrigeration machine) appears on 65 US grants and 67 published applications in this corpus.
Search patents in F25B- Granted patents
- 65
- Published applications
- 67
- Assignees
- 41
- Inventors
- 143
- Latest grant
- 28 Oct 2025
Filings by year
| Year | Granted patents | Published applications |
|---|---|---|
| 1990 | 1 | 0 |
| 1991 | 1 | 0 |
| 1992 | 1 | 0 |
| 1993 | 0 | 0 |
| 1994 | 0 | 0 |
| 1995 | 1 | 0 |
| 1996 | 1 | 0 |
| 1997 | 1 | 0 |
| 1998 | 1 | 0 |
| 1999 | 1 | 0 |
| 2000 | 0 | 0 |
| 2001 | 0 | 0 |
| 2002 | 1 | 0 |
| 2003 | 0 | 1 |
| 2004 | 1 | 1 |
| 2005 | 0 | 3 |
| 2006 | 2 | 4 |
| 2007 | 2 | 4 |
| 2008 | 1 | 0 |
| 2009 | 2 | 0 |
| 2010 | 1 | 2 |
| 2011 | 1 | 0 |
| 2012 | 1 | 0 |
| 2013 | 0 | 1 |
| 2014 | 1 | 4 |
| 2015 | 2 | 5 |
| 2016 | 1 | 3 |
| 2017 | 3 | 7 |
| 2018 | 4 | 2 |
| 2019 | 8 | 3 |
| 2020 | 4 | 5 |
| 2021 | 2 | 6 |
| 2022 | 5 | 6 |
| 2023 | 6 | 7 |
| 2024 | 5 | 1 |
| 2025 | 4 | 2 |
By publication year. Applications have been published since 2001.
Recent patents
- Cryocooler and magnetic shield28 Oct 2025US 12,456,566 B2Sum Itomo Heavy Industries, Ltd.
- Cryocooler7 Oct 2025US 12,435,910 B2Lihan Cryogenics Co., Ltd., Shenzhen (Cn)
- Method and apparatus for a rotary thermodynamic cycle with substantially isobaric fluid admission15 Jul 2025US 12,359,641 B2Fetu Limited
- Serially arranged circulating cryocooler system18 Mar 2025US 12,253,289 B2Sumitomo (Shi) Crygenics of America, Inc.
- Cryogenic cooling system9 Jul 2024US 12,031,682 B2Sumitomo Heavy Industries, Ltd.
- Cryogenic refrigerator, and method for cooling down cryogenic refrigerator20 Nov 2025US 2025/0354727 A1Sumitomo Heavy Industries, Ltd.
- Method for operating cryocooler9 Jan 2025US 2025/0012486 A1Sumitomo Heavy Industries, Ltd.
- Thermodynamic Cycle21 Nov 2024US 2024/0384693 A1Fetu Limited
- Cryocooler14 Dec 2023US 2023/0400228 A1Lihan Cryogenics Co., Ltd., Shenzhen (Cn)
- Cryocooler health monitoring systems and methods21 Sep 2023US 2023/0296310 A1Teledyne FLIR Commercial Systems, Inc.
Most cited
By later US patents
- Electronic controller for linear cryogenic coolers86US 5,752,385 ALitton Systems, Inc. · 1998
- Motor driver circuit for resonant linear cooler50US 5,032,772 A1991
- Control of stirling cooler displacement by pulse width modulation of drive motor voltage49US 5,156,005 ASunPower Corporation · 1992
- Cryopump synchronous motor load monitor40US 5,900,822 AHelix Technology Corporation · 1999
- Stirling-cycle cyrogenic cooler using adaptive feedforward vibration control18US 5,392,607 AHughes Aircraft Company · 1995