F02G 2243/02
Stirling type engines having closed regenerative thermodynamic cycles with flow controlled by
Official title: having pistons and displacers in the same cylinder
F02G2243/02 (Stirling type engines having closed regenerative thermodynamic cycles with flow controlled by) appears on 167 US grants and 82 published applications in this corpus.
Search patents in F02G- Granted patents
- 167
- Published applications
- 82
- Assignees
- 68
- Inventors
- 234
- Latest grant
- 9 Jun 2026
Filings by year
| Year | Granted patents | Published applications |
|---|---|---|
| 1976 | 3 | 0 |
| 1977 | 3 | 0 |
| 1978 | 2 | 0 |
| 1979 | 2 | 0 |
| 1980 | 2 | 0 |
| 1981 | 0 | 0 |
| 1982 | 3 | 0 |
| 1983 | 6 | 0 |
| 1984 | 1 | 0 |
| 1985 | 5 | 0 |
| 1986 | 4 | 0 |
| 1987 | 5 | 0 |
| 1988 | 7 | 0 |
| 1989 | 8 | 0 |
| 1990 | 1 | 0 |
| 1991 | 2 | 0 |
| 1992 | 0 | 0 |
| 1993 | 1 | 0 |
| 1994 | 2 | 0 |
| 1995 | 4 | 0 |
| 1996 | 2 | 0 |
| 1997 | 1 | 0 |
| 1998 | 3 | 0 |
| 1999 | 1 | 0 |
| 2000 | 6 | 0 |
| 2001 | 13 | 4 |
| 2002 | 7 | 2 |
| 2003 | 2 | 3 |
| 2004 | 3 | 6 |
| 2005 | 3 | 3 |
| 2006 | 5 | 1 |
| 2007 | 1 | 2 |
| 2008 | 2 | 7 |
| 2009 | 2 | 2 |
| 2010 | 4 | 2 |
| 2011 | 3 | 3 |
| 2012 | 2 | 4 |
| 2013 | 2 | 3 |
| 2014 | 2 | 1 |
| 2015 | 3 | 4 |
| 2016 | 2 | 5 |
| 2017 | 2 | 2 |
| 2018 | 5 | 6 |
| 2019 | 2 | 1 |
| 2020 | 3 | 5 |
| 2021 | 6 | 6 |
| 2022 | 10 | 4 |
| 2023 | 3 | 3 |
| 2024 | 3 | 2 |
| 2025 | 2 | 1 |
| 2026 | 1 | 0 |
By publication year. Applications have been published since 2001. 2026 runs to 8 Oct.
Subgroups
Granted patents
Recent patents
- Maximum delivery adiabatic hot-air engine9 Jun 2026US 12,650,097 B1
- Engine displacer with regenerator channels4 Nov 2025US 12,460,600 B2Ekstera Inc.
- Systems for generating geothermal power in an organic Rankine cycle operation during hydrocarbon production based on working fluid temperature12 Aug 2025US 12,385,474 B2ICE Thermal Harvesting, LLC
- Systems for generating geothermal power in an organic Rankine cycle operation during hydrocarbon production based on wellhead fluid temperature5 Nov 2024US 12,135,016 B2ICE Thermal Harvesting, LLC
- Systems for generating geothermal power in an organic Rankine cycle operation during hydrocarbon production based on working fluid temperature13 Aug 2024US 12,060,867 B2ICE Thermal Harvesting, LLC
- Engine displacer with regenerator channels2 Oct 2025US 2025/0305468 A1Ekstera Inc.
- Systems for generating geothermal power in an organic rankine cycle operation during hydrocarbon production based on working fluid temperature19 Sep 2024US 2024/0309856 A1ICE Thermal Harvesting, LLC
- Systems for generating geothermal power in an organic rankine cycle operation during hydrocarbon production based on wellhead fluid temperature1 Aug 2024US 2024/0254973 A1ICE Thermal Harvesting, LLC
- Stirling engine, and method for adjusting same21 Dec 2023US 2023/0407812 A1Twinbird Corporation
- Systems for generating geothermal power in an organic rankine cycle operation during hydrocarbon production based on wellhead fluid temperature19 Oct 2023US 2023/0332582 A1ICE Thermal Harvesting, LLC
Most cited
By later US patents
- Premixed charge compression ignition engine with optimal combustion control196US 6,276,334 B1Cummins Engine Company, Inc. · 2001
- Stirling engine combustor77US 4,352,269 AMechanical Technology Incorporated · 1982
- Methods for generating geothermal power in an organic Rankine cycle operation during hydrocarbon production based on working fluid temperature55US 11,187,212 B1ICE Thermal Harvesting, LLC · 2021
- Device for converting thermal energy into mechanical energy52US 3,990,246 AAudi NSU Auto Union Aktiengesellschaft · 1976
- Stirling engine thermal system improvements47US 6,694,731 B2DEKA Products Limited Partnership · 2004