F02G 2254/00
Heat inputs
F02G2254/00 (Heat inputs) appears on 372 US grants and 208 published applications in this corpus.
Search patents in F02G- Granted patents
- 372
- Published applications
- 208
- Assignees
- 157
- Inventors
- 569
- Latest grant
- 9 Jun 2026
Filings by year
| Year | Granted patents | Published applications |
|---|---|---|
| 1976 | 7 | 0 |
| 1977 | 8 | 0 |
| 1978 | 7 | 0 |
| 1979 | 8 | 0 |
| 1980 | 7 | 0 |
| 1981 | 6 | 0 |
| 1982 | 8 | 0 |
| 1983 | 10 | 0 |
| 1984 | 13 | 0 |
| 1985 | 5 | 0 |
| 1986 | 5 | 0 |
| 1987 | 11 | 0 |
| 1988 | 9 | 0 |
| 1989 | 14 | 0 |
| 1990 | 9 | 0 |
| 1991 | 9 | 0 |
| 1992 | 8 | 0 |
| 1993 | 6 | 0 |
| 1994 | 9 | 0 |
| 1995 | 7 | 0 |
| 1996 | 3 | 0 |
| 1997 | 2 | 0 |
| 1998 | 9 | 0 |
| 1999 | 9 | 0 |
| 2000 | 4 | 0 |
| 2001 | 5 | 3 |
| 2002 | 10 | 10 |
| 2003 | 7 | 3 |
| 2004 | 6 | 7 |
| 2005 | 5 | 5 |
| 2006 | 6 | 7 |
| 2007 | 2 | 8 |
| 2008 | 5 | 6 |
| 2009 | 1 | 12 |
| 2010 | 2 | 10 |
| 2011 | 9 | 11 |
| 2012 | 3 | 7 |
| 2013 | 12 | 10 |
| 2014 | 3 | 16 |
| 2015 | 8 | 8 |
| 2016 | 6 | 6 |
| 2017 | 17 | 9 |
| 2018 | 10 | 10 |
| 2019 | 9 | 10 |
| 2020 | 8 | 12 |
| 2021 | 17 | 10 |
| 2022 | 7 | 12 |
| 2023 | 8 | 4 |
| 2024 | 5 | 3 |
| 2025 | 4 | 4 |
| 2026 | 4 | 5 |
By publication year. Applications have been published since 2001. 2026 runs to 8 Oct.
Subgroups
Granted patents
- F02G 2254/30Heat inputs: using solar radiationIndexing code174
- F02G 2254/10Heat inputs: by burnersIndexing code149
- F02G 2254/15Heat inputs: by exhaust gasIndexing code36
- F02G 2254/18Heat inputs: using deflectorsIndexing code17
- F02G 2254/60Heat inputs: using air preheatersIndexing code15
- F02G 2254/50Dome arrangements for heat inputIndexing code13
- F02G 2254/20Heat inputs: using heat transfer tubesIndexing code11
- F02G 2254/70Heat inputs: by catalytic conversion, i.e. flameless oxydationIndexing code11
Recent patents
- Maximum delivery adiabatic hot-air engine9 Jun 2026US 12,650,097 B1
- System for supplying electricity, heat, and water using a Stirling engine powered by sustainable energy sources26 May 2026US 12,638,196 B2
- Hot air engine19 May 2026US 12,631,154 B2Ceramic Stirling IP Holding LLP
- Spray-actuated heat engine17 Feb 2026US 12,553,672 B1
- Heat exchanger for stirling machine, method for manufacturing heat exchanger, and stirling machine26 Aug 2025US 12,398,928 B2Honda Motor Co., Ltd.
- Hybrid solar power generation system and civil engineering work with such system4 Jun 2026US 2026/0155782 A1Energypier AG
- Hot-gas free-piston stirling engine with efficient hot air inlet2 Apr 2026US 2026/0092576 A1Exowatt, Inc.
- Dual-Head Opposing-Piston Free-Piston Stirling Engine Design12 Mar 2026US 2026/0071588 A1Exowatt, Inc.
- Hot air engine5 Feb 2026US 2026/0036099 A1Ceramic Stirling IP Holding LLP
- System for supplying electricty, heat, and water using a stirling engine powered by sustainable energy sources5 Feb 2026US 2026/0036310 A1
Most cited
By later US patents
- Microcomponent chemical process sheet architecture299US 5,811,062 ABattelle Memorial Institute · 1998
- Method and apparatus for operation of combustion engines205US 6,155,212 A2000
- Thermoelectric power generation utilizing convective heat flow186US 6,598,405 B2Bsst LLC · 2003
- Efficiency thermoelectrics utilizing convective heat flow127US 6,672,076 B2Bsst LLC · 2004
- Off-board station and an electricity exchanging system suitable for use with a mobile vehicle power system114US 6,380,637 B1Ztek Corporation · 2002