F02G 1/057
Regenerators
F02G1/057 (Regenerators) appears on 152 US grants and 123 published applications in this corpus.
Search patents in F02G- Granted patents
- 152
- Published applications
- 123
- Assignees
- 87
- Inventors
- 230
- Latest grant
- 18 Nov 2025
Filings by year
| Year | Granted patents | Published applications |
|---|---|---|
| 1976 | 1 | 0 |
| 1977 | 1 | 0 |
| 1978 | 2 | 0 |
| 1979 | 0 | 0 |
| 1980 | 1 | 0 |
| 1981 | 0 | 0 |
| 1982 | 0 | 0 |
| 1983 | 2 | 0 |
| 1984 | 3 | 0 |
| 1985 | 0 | 0 |
| 1986 | 4 | 0 |
| 1987 | 3 | 0 |
| 1988 | 3 | 0 |
| 1989 | 2 | 0 |
| 1990 | 4 | 0 |
| 1991 | 1 | 0 |
| 1992 | 2 | 0 |
| 1993 | 0 | 0 |
| 1994 | 1 | 0 |
| 1995 | 1 | 0 |
| 1996 | 0 | 0 |
| 1997 | 1 | 0 |
| 1998 | 2 | 0 |
| 1999 | 0 | 0 |
| 2000 | 1 | 0 |
| 2001 | 11 | 0 |
| 2002 | 8 | 3 |
| 2003 | 3 | 5 |
| 2004 | 6 | 5 |
| 2005 | 2 | 5 |
| 2006 | 4 | 5 |
| 2007 | 2 | 1 |
| 2008 | 2 | 1 |
| 2009 | 0 | 1 |
| 2010 | 0 | 2 |
| 2011 | 0 | 2 |
| 2012 | 1 | 5 |
| 2013 | 0 | 4 |
| 2014 | 1 | 4 |
| 2015 | 4 | 8 |
| 2016 | 7 | 9 |
| 2017 | 6 | 5 |
| 2018 | 7 | 11 |
| 2019 | 6 | 1 |
| 2020 | 10 | 15 |
| 2021 | 13 | 10 |
| 2022 | 10 | 9 |
| 2023 | 4 | 4 |
| 2024 | 5 | 1 |
| 2025 | 5 | 4 |
| 2026 | 0 | 3 |
By publication year. Applications have been published since 2001. 2026 runs to 8 Oct.
Recent patents
- Stirling machine and method for manufacturing stirling machine18 Nov 2025US 12,473,873 B2Honda Motor Co., Ltd.
- Engine displacer with regenerator channels4 Nov 2025US 12,460,600 B2Ekstera Inc.
- Heat exchanger for stirling machine, method for manufacturing heat exchanger, and stirling machine26 Aug 2025US 12,398,928 B2Honda Motor Co., Ltd.
- Alpha stirling engine8 Jul 2025US 12,352,223 B2EnergyIntel Services Ltd.
- System and apparatus for energy conversion18 Feb 2025US 12,228,094 B2Hyliion Holdings Corp.
- Regenerator construction and structural design for enhanced performance in vuilleumier heat pumps16 Jul 2026US 2026/0201848 A1
- Stirling cycle heat pump with actuated regenerator and integrated displacer23 Apr 2026US 2026/0110277 A1Raytheon Company
- Hot-gas free-piston stirling engine with efficient hot air inlet2 Apr 2026US 2026/0092576 A1Exowatt, Inc.
- Engine displacer with regenerator channels2 Oct 2025US 2025/0305468 A1Ekstera Inc.
- Stirling machine and method for manufacturing stirling machine20 Mar 2025US 2025/0092844 A1Honda Motor Co., Ltd.
Most cited
By later US patents
- Stirling engine thermal system improvements47US 6,694,731 B2DEKA Products Limited Partnership · 2004
- Heat exchanger44US 5,675,974 ARobert Bosch GmbH · 1997
- Heat exchanger in the burner cup of a heat engine42US 6,293,101 B1Fantom Technologies Inc. · 2001
- Stirling engine thermal system improvements36US 6,381,958 B1New Power Concepts LLC · 2002
- Mechanical arrangements for Stirling-cycle, reciprocating thermal machines33US 4,413,474 A1983