Y02A 30/274
Using waste energy
Official title: using waste energy, e.g. from internal combustion engine
Y02A30/274 (Using waste energy) appears on 295 US grants and 308 published applications in this corpus.
Search patents in Y02A- Granted patents
- 295
- Published applications
- 308
- Assignees
- 176
- Inventors
- 655
- Latest grant
- 19 Aug 2025
Filings by year
| Year | Granted patents | Published applications |
|---|---|---|
| 1977 | 1 | 0 |
| 1978 | 1 | 0 |
| 1979 | 2 | 0 |
| 1980 | 3 | 0 |
| 1981 | 3 | 0 |
| 1982 | 4 | 0 |
| 1983 | 3 | 0 |
| 1984 | 3 | 0 |
| 1985 | 4 | 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 | 1 | 0 |
| 1998 | 6 | 0 |
| 1999 | 3 | 0 |
| 2000 | 5 | 0 |
| 2001 | 5 | 4 |
| 2002 | 9 | 9 |
| 2003 | 12 | 14 |
| 2004 | 10 | 13 |
| 2005 | 6 | 17 |
| 2006 | 9 | 39 |
| 2007 | 15 | 11 |
| 2008 | 12 | 13 |
| 2009 | 9 | 4 |
| 2010 | 10 | 10 |
| 2011 | 4 | 14 |
| 2012 | 3 | 7 |
| 2013 | 6 | 11 |
| 2014 | 8 | 15 |
| 2015 | 8 | 19 |
| 2016 | 9 | 24 |
| 2017 | 18 | 12 |
| 2018 | 15 | 18 |
| 2019 | 2 | 16 |
| 2020 | 17 | 9 |
| 2021 | 10 | 10 |
| 2022 | 20 | 11 |
| 2023 | 3 | 4 |
| 2024 | 5 | 3 |
| 2025 | 3 | 1 |
By publication year. Applications have been published since 2001.
Recent patents
- Ejector-enhanced heat recovery refrigeration system19 Aug 2025US 12,392,527 B2Carrier Corporation
- Refrigeration cycle device24 Jun 2025US 12,337,656 B2Denso Corporation
- Gas turbine inlet cooling for constant power output24 Jun 2025US 12,338,767 B2University of Florida Research Foundation, Inc.
- System and method for heat and energy recovery and regeneration22 Oct 2024US 12,123,623 B1Commercial Energy Saving Plus, LLC
- Heat exchanger1 Oct 2024US 12,104,861 B2LG Electronics Inc.
- Systems and methods for temperature control and heat extraction from waste landfills13 Mar 2025US 2025/0085029 A1
- Heat-Driven Vapor-Compression System for Air Conditioning and Refrigeration11 Jul 2024US 2024/0230173 A1HyperBorean, Inc.
- Systems and methods for temperature control and heat extraction from waste landfills11 Apr 2024US 2024/0118000 A1
- Multipurpose system of cooling and heating supply and firefighting servo-control based on energy-storage co2 circulation and operation method of same8 Feb 2024US 2024/0042255 A1Central South University
- Gas turbine inlet cooling for constant power output28 Dec 2023US 2023/0417187 A1University of Florida Research Foundation, Inc.
Most cited
By later US patents
- Thermoelectric power generation utilizing convective heat flow186US 6,598,405 B2Bsst LLC · 2003
- 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
- System for electric generation, heating, cooling, and ventilation68US 6,054,229 AZtek Corporation · 2000
- Air conditioning apparatus60US 4,987,750 A1991