F02G 2270/30
Displacer assemblies
F02G2270/30 (Displacer assemblies) appears on 22 US grants and 23 published applications in this corpus.
Search patents in F02G- Granted patents
- 22
- Published applications
- 23
- Assignees
- 20
- Inventors
- 48
- Latest grant
- 4 Nov 2025
Filings by year
| Year | Granted patents | Published applications |
|---|---|---|
| 1989 | 1 | 0 |
| 1990 | 1 | 0 |
| 1991 | 1 | 0 |
| 1992 | 1 | 0 |
| 1993 | 0 | 0 |
| 1994 | 1 | 0 |
| 1995 | 0 | 0 |
| 1996 | 0 | 0 |
| 1997 | 0 | 0 |
| 1998 | 0 | 0 |
| 1999 | 0 | 0 |
| 2000 | 0 | 0 |
| 2001 | 0 | 0 |
| 2002 | 0 | 0 |
| 2003 | 0 | 0 |
| 2004 | 0 | 0 |
| 2005 | 0 | 0 |
| 2006 | 0 | 0 |
| 2007 | 0 | 1 |
| 2008 | 0 | 0 |
| 2009 | 1 | 0 |
| 2010 | 0 | 2 |
| 2011 | 0 | 2 |
| 2012 | 0 | 3 |
| 2013 | 3 | 2 |
| 2014 | 0 | 1 |
| 2015 | 2 | 0 |
| 2016 | 0 | 1 |
| 2017 | 1 | 3 |
| 2018 | 3 | 1 |
| 2019 | 0 | 1 |
| 2020 | 2 | 2 |
| 2021 | 2 | 1 |
| 2022 | 1 | 2 |
| 2023 | 0 | 0 |
| 2024 | 1 | 0 |
| 2025 | 1 | 1 |
By publication year. Applications have been published since 2001.
Recent patents
- Engine displacer with regenerator channels4 Nov 2025US 12,460,600 B2Ekstera Inc.
- Beta-type Stirling machine9 Apr 2024US 11,952,960 B2Universite De Franche-Comt
- Closed cycle regenerative heat engines20 Dec 2022US 11,530,668 B2Stirling Works Global Ltd
- Closed cycle regenerative heat engines1 Jun 2021US 11,022,067 B2Stirling Works Global Ltd
- Closed cycle regenerative heat engines12 Jan 2021US 10,890,138 B2Stirling Works Global Ltd
- Engine displacer with regenerator channels2 Oct 2025US 2025/0305468 A1Ekstera Inc.
- Slotted displacer system for stirling engines1 Dec 2022US 2022/0381199 A1
- Beta-type stirling machine3 Mar 2022US 2022/0065193 A1Universite De Franche-Comte
- Closed Cycle Regenerative Heat Engines9 Sep 2021US 2021/0277846 A1Stirling Works Global Ltd
- Closed Cycle Regenerative Heat Engines30 Jul 2020US 2020/0240358 A1Stirling Works Global Ltd
Most cited
By later US patents
- Asymmetric gas spring23US 5,003,777 ASunPower Corporation · 1991
- Stirling cycle engine20US 4,821,516 AAisin Seiki Kabushiki Kaisha · 1989
- Leaky gas spring valve for preventing piston overstroke in a free piston stirling engine18US 4,945,726 ASunPower Corporation · 1990
- Stirling engine7US 5,337,562 ABomin Solar GmbH & Co. KG · 1994
- Stirling engine with flapping wing for an emission-free aircraft7US 9,080,450 B2Airbus Defence and Space GmbH · 2015