F01D 25/08
Cooling
Official title: Cooling (of machines or engines in general F01P); Heating; Heat-insulation (of blade-carrying members, of blades F01D5/00)
F01D25/08 (Cooling) appears on 3,776 US grants and 4,125 published applications in this corpus.
Search patents in F01D- Granted patents
- 3,776
- Published applications
- 4,125
- Assignees
- 438
- Inventors
- 6,298
- Latest grant
- 6 Oct 2026
Filings by year
| Year | Granted patents | Published applications |
|---|---|---|
| 1976 | 3 | 0 |
| 1977 | 4 | 0 |
| 1978 | 8 | 0 |
| 1979 | 9 | 0 |
| 1980 | 9 | 0 |
| 1981 | 10 | 0 |
| 1982 | 6 | 0 |
| 1983 | 4 | 0 |
| 1984 | 10 | 0 |
| 1985 | 10 | 0 |
| 1986 | 10 | 0 |
| 1987 | 10 | 0 |
| 1988 | 13 | 0 |
| 1989 | 7 | 0 |
| 1990 | 5 | 0 |
| 1991 | 7 | 0 |
| 1992 | 17 | 0 |
| 1993 | 11 | 0 |
| 1994 | 7 | 0 |
| 1995 | 5 | 0 |
| 1996 | 12 | 0 |
| 1997 | 5 | 0 |
| 1998 | 7 | 0 |
| 1999 | 8 | 0 |
| 2000 | 18 | 0 |
| 2001 | 36 | 15 |
| 2002 | 55 | 40 |
| 2003 | 49 | 41 |
| 2004 | 34 | 46 |
| 2005 | 33 | 58 |
| 2006 | 44 | 42 |
| 2007 | 21 | 65 |
| 2008 | 29 | 59 |
| 2009 | 28 | 73 |
| 2010 | 49 | 99 |
| 2011 | 50 | 102 |
| 2012 | 92 | 111 |
| 2013 | 70 | 163 |
| 2014 | 104 | 170 |
| 2015 | 117 | 236 |
| 2016 | 138 | 442 |
| 2017 | 188 | 417 |
| 2018 | 318 | 374 |
| 2019 | 445 | 334 |
| 2020 | 419 | 306 |
| 2021 | 329 | 215 |
| 2022 | 274 | 181 |
| 2023 | 210 | 149 |
| 2024 | 181 | 150 |
| 2025 | 157 | 143 |
| 2026 | 91 | 94 |
By publication year. Applications have been published since 2001. 2026 runs to 8 Oct.
Subgroups
Granted patents
Recent patents
- Turbine engine with a blade assembly having a set of cooling conduits6 Oct 2026US 12,753,696 B2General Electric Company
- Gas turbine engines having self-cooling seals and methods of operating the same29 Sep 2026US 12,747,672 B1Honeywell Aerospace US LLC
- Turbine exhaust duct having shielding conduits29 Sep 2026US 12,747,701 B1Pratt & Whitney Canada Corp.
- CMC component with structure for directing cooling air flow22 Sep 2026US 12,742,398 B2Rtx Corporation
- Ultra-micro gas turbine generator15 Sep 2026US 12,736,007 B2
- Turbine engine component with a cooling aperture8 Oct 2026US 2026/0309042 A1General Electric Company
- Cooling system for aircraft powerplant electronics1 Oct 2026US 2026/0296666 A1Rtx Corporation
- High efficiency power production methods, assemblies, and systems1 Oct 2026US 2026/0298097 A18 Rivers Capital, LLC
- Water cooled exhaust duct1 Oct 2026US 2026/0298137 A1Rtx Corporation
- Cmc component with cooling cavity24 Sep 2026US 2026/0286856 A1Rtx Corporation
Most cited
By later US patents
- Integrated thermal management and coolant system for an aircraft196US 6,415,595 B1Hamilton Sundstrand Corporation · 2002
- Thermal and energy management method and apparatus for an aircraft164US 6,182,435 B2Hamilton Sundstrand Corporation · 2001
- Impingement cooled transition duct153US 4,719,748 AGeneral Electric Company · 1988
- Method for improving the cooling effectiveness of a gaseous coolant stream, and related articles of manufacture153US 6,234,755 B1General Electric Company · 2001
- Method and apparatus for cooling a wall within a gas turbine engine143US 6,402,470 B1United Technologies Corporation · 2002