F02G 3/00
Combustion-product positive-displacement engine plants
F02G3/00 (Combustion-product positive-displacement engine plants) appears on 218 US grants and 92 published applications in this corpus.
Search patents in F02G- Granted patents
- 218
- Published applications
- 92
- Assignees
- 70
- Inventors
- 241
- Latest grant
- 4 Mar 2025
Filings by year
| Year | Granted patents | Published applications |
|---|---|---|
| 1976 | 8 | 0 |
| 1977 | 7 | 0 |
| 1978 | 4 | 0 |
| 1979 | 2 | 0 |
| 1980 | 3 | 0 |
| 1981 | 4 | 0 |
| 1982 | 3 | 0 |
| 1983 | 2 | 0 |
| 1984 | 7 | 0 |
| 1985 | 4 | 0 |
| 1986 | 5 | 0 |
| 1987 | 6 | 0 |
| 1988 | 11 | 0 |
| 1989 | 7 | 0 |
| 1990 | 3 | 0 |
| 1991 | 4 | 0 |
| 1992 | 3 | 0 |
| 1993 | 2 | 0 |
| 1994 | 4 | 0 |
| 1995 | 5 | 0 |
| 1996 | 10 | 0 |
| 1997 | 2 | 0 |
| 1998 | 7 | 0 |
| 1999 | 4 | 0 |
| 2000 | 3 | 0 |
| 2001 | 6 | 0 |
| 2002 | 10 | 7 |
| 2003 | 5 | 5 |
| 2004 | 3 | 2 |
| 2005 | 2 | 2 |
| 2006 | 4 | 0 |
| 2007 | 1 | 2 |
| 2008 | 1 | 0 |
| 2009 | 0 | 1 |
| 2010 | 1 | 2 |
| 2011 | 0 | 1 |
| 2012 | 1 | 4 |
| 2013 | 3 | 17 |
| 2014 | 5 | 6 |
| 2015 | 9 | 6 |
| 2016 | 8 | 3 |
| 2017 | 5 | 2 |
| 2018 | 6 | 6 |
| 2019 | 2 | 4 |
| 2020 | 6 | 10 |
| 2021 | 8 | 2 |
| 2022 | 5 | 4 |
| 2023 | 3 | 2 |
| 2024 | 3 | 2 |
| 2025 | 1 | 1 |
| 2026 | 0 | 1 |
By publication year. Applications have been published since 2001. 2026 runs to 8 Oct.
Subgroups
Granted patents
Recent patents
- Multifuel closed-loop thermal cycle piston engine, system and method4 Mar 2025US 12,241,432 B2Engine Development Corp, LLC
- Engine apparatus and method for operation29 Oct 2024US 12,129,812 B2Hyliion Holdings Corp.
- Constant density heat exchanger and system for energy conversion7 May 2024US 11,976,610 B2Hyliion Holdings Corp.
- Monolithic heat-exchanger bodies30 Jan 2024US 11,885,279 B2Hyliion Holdings Corp.
- Energy conversion apparatus29 Aug 2023US 11,739,711 B2Hyliion Holdings Corp.
- Comprehensive energy supply system with hydrogen production and prediction function and integrated with hydrogen energy storage by residual flue gas of gas engine24 Sep 2026US 2026/0286916 A1The Architectural Design & Research Institute of Zhejiang University Co., Ltd.
- Multifuel closed-loop thermal cycle piston engine, system and method5 Jun 2025US 2025/0179967 A1Engine Development Corp, LLC
- Monolithic heat-exchanger bodies16 May 2024US 2024/0159201 A1Hyliion Holdings Corp.
- Multifuel closed-loop thermal cycle piston engine, system and method9 May 2024US 2024/0151193 A1Engine Development Corp, LLC
- Constant density heat exchanger and system for energy conversion20 Jul 2023US 2023/0228229 A1General Electric Company
Most cited
By later US patents
- Power plant utilizing compressed air energy storage and saturation333US 5,491,969 AElectric Power Research Institute, Inc. · 1996
- Center burner in a multi-burner combustor111US 5,924,275 AGeneral Electric Company · 1999
- Sliding-blade rotary air-heat engine with isothermal compression of air99US 5,839,270 A1998
- Power plant utilizing compressed air energy storage and saturation90US 5,379,589 AElectric Power Research Institute, Inc. · 1995
- Catalytic combustor with lean direct injection of gas fuel for low emissions combustion and methods of operation65US 5,850,731 AGeneral Electric Company · 1998