F02G 2254/30
Heat inputs: using solar radiation
Official title: using solar radiation
F02G2254/30 (Heat inputs: using solar radiation) appears on 174 US grants and 48 published applications in this corpus.
Search patents in F02G- Granted patents
- 174
- Published applications
- 48
- Assignees
- 66
- Inventors
- 247
- Latest grant
- 9 Jun 2026
Filings by year
| Year | Granted patents | Published applications |
|---|---|---|
| 1976 | 1 | 0 |
| 1977 | 7 | 0 |
| 1978 | 4 | 0 |
| 1979 | 7 | 0 |
| 1980 | 7 | 0 |
| 1981 | 3 | 0 |
| 1982 | 7 | 0 |
| 1983 | 9 | 0 |
| 1984 | 13 | 0 |
| 1985 | 3 | 0 |
| 1986 | 4 | 0 |
| 1987 | 6 | 0 |
| 1988 | 6 | 0 |
| 1989 | 9 | 0 |
| 1990 | 5 | 0 |
| 1991 | 4 | 0 |
| 1992 | 7 | 0 |
| 1993 | 6 | 0 |
| 1994 | 5 | 0 |
| 1995 | 5 | 0 |
| 1996 | 1 | 0 |
| 1997 | 2 | 0 |
| 1998 | 7 | 0 |
| 1999 | 5 | 0 |
| 2000 | 1 | 0 |
| 2001 | 0 | 0 |
| 2002 | 1 | 1 |
| 2003 | 0 | 1 |
| 2004 | 2 | 1 |
| 2005 | 1 | 2 |
| 2006 | 3 | 2 |
| 2007 | 0 | 0 |
| 2008 | 1 | 2 |
| 2009 | 0 | 0 |
| 2010 | 0 | 1 |
| 2011 | 2 | 4 |
| 2012 | 0 | 4 |
| 2013 | 7 | 4 |
| 2014 | 1 | 7 |
| 2015 | 3 | 0 |
| 2016 | 2 | 2 |
| 2017 | 4 | 3 |
| 2018 | 2 | 2 |
| 2019 | 3 | 1 |
| 2020 | 0 | 1 |
| 2021 | 4 | 3 |
| 2022 | 1 | 2 |
| 2023 | 1 | 0 |
| 2024 | 0 | 0 |
| 2025 | 0 | 1 |
| 2026 | 2 | 4 |
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
- System for supplying electricity, heat, and water using a Stirling engine powered by sustainable energy sources26 May 2026US 12,638,196 B2
- Solar energy collector and power generation system28 Nov 2023US 11,828,495 B1
- Stirling engine design and assembly15 Nov 2022US 11,499,501 B2Azelio AB
- Method for generating mechanical energy from sunlight28 Dec 2021US 11,209,194 B1King Abdulaziz University
- 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.
- System for supplying electricty, heat, and water using a stirling engine powered by sustainable energy sources5 Feb 2026US 2026/0036310 A1
- Cooling system, compressor system and solar tracking device19 Jun 2025US 2025/0198664 A1
Most cited
By later US patents
- Heat engine and heat pump94US 5,934,076 ANational Power PLC · 1999
- Convertor for thermal energy into electrical energy using Stirling motor and integral electrical generator74US 4,511,805 ABertin & Cie · 1985
- Self-contained renewable energy system69US 4,776,171 APerry Oceanographics, Inc. · 1988
- Low temperature solar-to-electric power conversion system69US 5,228,293 AMechanical Technology Incorporated · 1993
- Variable cycle stirling engine and gas leakage control system therefor66US 4,489,554 A1984