F25B 27/02
Machines, plants or systems, using particular sources of energy: using waste heat
Official title: using waste heat, e.g. from internal-combustion engines
F25B27/02 (Machines, plants or systems, using particular sources of energy: using waste heat) appears on 389 US grants and 423 published applications in this corpus.
Search patents in F25B- Granted patents
- 389
- Published applications
- 423
- Assignees
- 240
- Inventors
- 925
- Latest grant
- 2 Jun 2026
Filings by year
| Year | Granted patents | Published applications |
|---|---|---|
| 1977 | 1 | 0 |
| 1978 | 1 | 0 |
| 1979 | 2 | 0 |
| 1980 | 5 | 0 |
| 1981 | 3 | 0 |
| 1982 | 5 | 0 |
| 1983 | 3 | 0 |
| 1984 | 3 | 0 |
| 1985 | 3 | 0 |
| 1986 | 4 | 0 |
| 1987 | 0 | 0 |
| 1988 | 1 | 0 |
| 1989 | 4 | 0 |
| 1990 | 4 | 0 |
| 1991 | 1 | 0 |
| 1992 | 3 | 0 |
| 1993 | 2 | 0 |
| 1994 | 5 | 0 |
| 1995 | 1 | 0 |
| 1996 | 3 | 0 |
| 1997 | 2 | 0 |
| 1998 | 4 | 0 |
| 1999 | 4 | 0 |
| 2000 | 5 | 0 |
| 2001 | 4 | 4 |
| 2002 | 9 | 8 |
| 2003 | 13 | 10 |
| 2004 | 8 | 14 |
| 2005 | 6 | 17 |
| 2006 | 8 | 36 |
| 2007 | 14 | 11 |
| 2008 | 12 | 13 |
| 2009 | 8 | 4 |
| 2010 | 10 | 11 |
| 2011 | 4 | 14 |
| 2012 | 3 | 7 |
| 2013 | 6 | 13 |
| 2014 | 8 | 17 |
| 2015 | 8 | 27 |
| 2016 | 13 | 39 |
| 2017 | 22 | 18 |
| 2018 | 21 | 25 |
| 2019 | 14 | 30 |
| 2020 | 36 | 31 |
| 2021 | 20 | 16 |
| 2022 | 30 | 19 |
| 2023 | 13 | 10 |
| 2024 | 13 | 15 |
| 2025 | 14 | 9 |
| 2026 | 3 | 5 |
By publication year. Applications have been published since 2001. 2026 runs to 8 Oct.
Recent patents
- Energy utilization system and method for producing carbon-containing material2 Jun 2026US 12,644,193 B2Daikin Industries, Ltd.
- Systems and methods for recycling energy from distillation19 May 2026US 12,629,609 B2ICM, Inc.
- Air-conditioning apparatus and air-conditioning system20 Jan 2026US 12,529,499 B2Mitsubishi Electric Corporation
- Heat transfer systems for critical power applications25 Nov 2025US 12,480,702 B2Caeli, LLC
- Heat pump14 Oct 2025US 12,442,572 B2Yanmar Power Technology Co., Ltd.
- Waste heat-to-steam supply system and steam supply method for alkaline electrolytic cells10 Sep 2026US 2026/0266516 A1Northwest Electric Power Design Institute Co., Ltd. of China Power Engineering Consulting Group
- Integrated electrolyzer and absorption chiller system and methods of operating the same30 Jul 2026US 2026/0218396 A1Bloom Energy Corporation
- Absorption chiller system with a transport membrane heat exchanger23 Apr 2026US 2026/0110462 A1Scuderi Group, LLC
- Semiconductor processing platform using cascaded heat pumps for reduced energy consumption26 Feb 2026US 2026/0055964 A1Tokyo Electron Limited
- High-Efficiency Integrated Absorption Cooling System Utilizing Fuel Cell Exhaust Heat8 Jan 2026US 2026/0011762 A1Samjungtech Co., Ltd
Most cited
By later US patents
- Thermoelectric power generation utilizing convective heat flow186US 6,598,405 B2Bsst LLC · 2003
- Auxiliary heating and air conditioning system for a motor vehicle139US 5,901,572 ARocky Research · 1999
- Pressure exchanging ejector and refrigeration apparatus and method84US 5,647,221 AThe George Washington University · 1997
- Air cycle air conditioner for heating and cooling82US 5,121,610 AAisin Seiki Kabushiki Kaisha · 1992
- Heat and electric power supply system and operation method thereof75US 6,477,852 B2Hitachi, Ltd. · 2002