F02G 1/02
Hot gas positive-displacement engine plants: of open-cycle type
Official title: of open-cycle type
F02G1/02 (Hot gas positive-displacement engine plants: of open-cycle type) appears on 133 US grants and 91 published applications in this corpus.
Search patents in F02G- Granted patents
- 133
- Published applications
- 91
- Assignees
- 48
- Inventors
- 157
- Latest grant
- 9 Jun 2026
Filings by year
| Year | Granted patents | Published applications |
|---|---|---|
| 1976 | 6 | 0 |
| 1977 | 6 | 0 |
| 1978 | 5 | 0 |
| 1979 | 3 | 0 |
| 1980 | 2 | 0 |
| 1981 | 2 | 0 |
| 1982 | 2 | 0 |
| 1983 | 2 | 0 |
| 1984 | 2 | 0 |
| 1985 | 1 | 0 |
| 1986 | 1 | 0 |
| 1987 | 5 | 0 |
| 1988 | 4 | 0 |
| 1989 | 4 | 0 |
| 1990 | 2 | 0 |
| 1991 | 4 | 0 |
| 1992 | 0 | 0 |
| 1993 | 0 | 0 |
| 1994 | 1 | 0 |
| 1995 | 0 | 0 |
| 1996 | 0 | 0 |
| 1997 | 0 | 0 |
| 1998 | 0 | 0 |
| 1999 | 0 | 0 |
| 2000 | 1 | 0 |
| 2001 | 1 | 0 |
| 2002 | 3 | 4 |
| 2003 | 3 | 4 |
| 2004 | 2 | 3 |
| 2005 | 1 | 1 |
| 2006 | 2 | 5 |
| 2007 | 2 | 17 |
| 2008 | 8 | 3 |
| 2009 | 5 | 0 |
| 2010 | 5 | 4 |
| 2011 | 2 | 3 |
| 2012 | 3 | 5 |
| 2013 | 4 | 13 |
| 2014 | 3 | 5 |
| 2015 | 4 | 5 |
| 2016 | 6 | 2 |
| 2017 | 4 | 3 |
| 2018 | 3 | 3 |
| 2019 | 5 | 3 |
| 2020 | 4 | 3 |
| 2021 | 2 | 1 |
| 2022 | 1 | 1 |
| 2023 | 1 | 1 |
| 2024 | 2 | 1 |
| 2025 | 3 | 0 |
| 2026 | 1 | 1 |
By publication year. Applications have been published since 2001. 2026 runs to 8 Oct.
Recent patents
- Maximum delivery adiabatic hot-air engine9 Jun 2026US 12,650,097 B1
- Process for generating clean power and hydrogen30 Sep 2025US 12,428,296 B1Nucor Corporation
- Alternative heat source for an engine19 Aug 2025US 12,392,279 B1
- Internal combustion engine configured for use with solid or slow burning fuels, and methods of operating or implementing same6 May 2025US 12,291,990 B2
- Biomass energy generator system20 Aug 2024US 12,065,984 B2
- Internal combustion engine configured for use with solid or slow burning fuels, and methods of operating or implementing same19 Feb 2026US 2026/0049570 A1
- Biomass energy generator system7 Mar 2024US 2024/0077045 A1
- Internal combustion engine configured for use with solid or slow burning fuels, and methods of operating or implementing same16 Nov 2023US 2023/0366345 A1
- Internal combustion engine configured for use with solid or slow burning fuels, and methods of operating or implementing same27 Jan 2022US 2022/0025813 A1
- External heat engine with non-sinusoidal motion6 May 2021US 2021/0131540 A1Ekstera Inc.
Most cited
By later US patents
- Gas powered motors72US 4,449,372 A1984
- Quasi-isothermal brayton cycle engine55US 6,886,326 B2The Texas A&M University System · 2005
- Multi-staged internal combustion engine49US 4,783,966 A1988
- Traveling-wave device with mass flux suppression49US 6,032,464 AThe Regents of the University of California · 2000
- Method of operating a combustion piston engine with external combustion46US 3,932,987 A1976