F01K 27/02
Plants modified to use their waste heat, other than that of exhaust
Official title: Plants modified to use their waste heat, other than that of exhaust, e.g. engine-friction heat
F01K27/02 (Plants modified to use their waste heat, other than that of exhaust) appears on 155 US grants and 208 published applications in this corpus.
Search patents in F01K- Granted patents
- 155
- Published applications
- 208
- Assignees
- 109
- Inventors
- 337
- Latest grant
- 7 Jul 2026
Filings by year
| Year | Granted patents | Published applications |
|---|---|---|
| 1981 | 1 | 0 |
| 1982 | 1 | 0 |
| 1983 | 0 | 0 |
| 1984 | 1 | 0 |
| 1985 | 2 | 0 |
| 1986 | 0 | 0 |
| 1987 | 0 | 0 |
| 1988 | 0 | 0 |
| 1989 | 0 | 0 |
| 1990 | 1 | 0 |
| 1991 | 0 | 0 |
| 1992 | 0 | 0 |
| 1993 | 0 | 0 |
| 1994 | 0 | 0 |
| 1995 | 0 | 0 |
| 1996 | 0 | 0 |
| 1997 | 0 | 0 |
| 1998 | 0 | 0 |
| 1999 | 0 | 0 |
| 2000 | 0 | 0 |
| 2001 | 1 | 0 |
| 2002 | 0 | 0 |
| 2003 | 0 | 0 |
| 2004 | 0 | 1 |
| 2005 | 1 | 1 |
| 2006 | 0 | 1 |
| 2007 | 0 | 0 |
| 2008 | 2 | 0 |
| 2009 | 0 | 4 |
| 2010 | 2 | 6 |
| 2011 | 1 | 5 |
| 2012 | 0 | 7 |
| 2013 | 1 | 7 |
| 2014 | 4 | 15 |
| 2015 | 4 | 13 |
| 2016 | 9 | 12 |
| 2017 | 19 | 26 |
| 2018 | 12 | 17 |
| 2019 | 25 | 25 |
| 2020 | 25 | 17 |
| 2021 | 8 | 9 |
| 2022 | 10 | 9 |
| 2023 | 11 | 3 |
| 2024 | 4 | 13 |
| 2025 | 7 | 9 |
| 2026 | 3 | 8 |
By publication year. Applications have been published since 2001. 2026 runs to 8 Oct.
Recent patents
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- Loopback Heat Harvesting System20 Aug 2026US 2026/0243178 A1Jemm's Labs
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- Systems and methods for power generation or direct air capture30 Jul 2026US 2026/0218687 A1Innovator Energy, LLC
Most cited
By later US patents
- Power transformer waste heat recovery system85US 4,512,387 A1985
- Heat engine system including an integrated cooling circuit75US 10,024,198 B2Echogen Power Systems, LLC · 2018
- Hybrid power system for continuous reliable power at locations including remote locations60US 7,353,653 B2Ormat Technologies, Inc. · 2008
- Boiling-water geothermal heat exchanger and boiling-water geothermal power generation equipment51US 10,060,652 B2Kyoei Denki Kogyo Corporation · 2018
- Efficient oxidative coupling of methane processes and systems46US 9,334,204 B1Siluria Technologies, Inc. · 2016