F01D 5/181
Blades having a closed internal cavity containing a cooling medium
Official title: {Blades having a closed internal cavity containing a cooling medium, e.g. sodium}
F01D5/181 (Blades having a closed internal cavity containing a cooling medium) appears on 55 US grants and 53 published applications in this corpus.
Search patents in F01D- Granted patents
- 55
- Published applications
- 53
- Assignees
- 23
- Inventors
- 138
- Latest grant
- 29 Jul 2025
Filings by year
| Year | Granted patents | Published applications |
|---|---|---|
| 1980 | 1 | 0 |
| 1981 | 0 | 0 |
| 1982 | 0 | 0 |
| 1983 | 0 | 0 |
| 1984 | 0 | 0 |
| 1985 | 1 | 0 |
| 1986 | 0 | 0 |
| 1987 | 0 | 0 |
| 1988 | 0 | 0 |
| 1989 | 0 | 0 |
| 1990 | 0 | 0 |
| 1991 | 0 | 0 |
| 1992 | 1 | 0 |
| 1993 | 1 | 0 |
| 1994 | 1 | 0 |
| 1995 | 0 | 0 |
| 1996 | 0 | 0 |
| 1997 | 0 | 0 |
| 1998 | 0 | 0 |
| 1999 | 3 | 0 |
| 2000 | 0 | 0 |
| 2001 | 0 | 0 |
| 2002 | 0 | 0 |
| 2003 | 0 | 0 |
| 2004 | 0 | 0 |
| 2005 | 0 | 1 |
| 2006 | 0 | 0 |
| 2007 | 0 | 0 |
| 2008 | 1 | 1 |
| 2009 | 1 | 1 |
| 2010 | 0 | 1 |
| 2011 | 0 | 1 |
| 2012 | 1 | 1 |
| 2013 | 1 | 6 |
| 2014 | 0 | 2 |
| 2015 | 2 | 4 |
| 2016 | 4 | 8 |
| 2017 | 4 | 4 |
| 2018 | 3 | 7 |
| 2019 | 8 | 3 |
| 2020 | 5 | 1 |
| 2021 | 3 | 4 |
| 2022 | 5 | 2 |
| 2023 | 5 | 3 |
| 2024 | 2 | 2 |
| 2025 | 2 | 1 |
By publication year. Applications have been published since 2001.
Recent patents
- Stator vane comprising a heat pipe29 Jul 2025US 12,372,007 B2Safran Aircraft Engines
- Turbine blade seal assembly structure and gas turbine including same15 Jul 2025US 12,359,576 B2Doosan Enerbolity Co., Ltd.
- Blade with improved cooling performance and gas turbine having the same12 Nov 2024US 12,140,044 B2Hl Mando Corporation
- Aero-engine turbine assembly18 Jun 2024US 12,012,864 B2Beihang University
- Coolant transfer system and method for a dual-wall airfoil5 Dec 2023US 11,834,961 B2ROLLS-ROYCE plc
- Stator vane comprising a heat pipe20 Feb 2025US 2025/0059896 A1Safran Aircraft Engines
- Turbine blade seal assembly structure and gas turbine including same10 Oct 2024US 2024/0337189 A1Doosan Enerbility Co., Ltd.
- Blade with improved cooling performance and gas turbine having the same26 Sep 2024US 2024/0318561 A1Doosan Enerbility Co., Ltd.
- Aero-engine turbine assembly5 Oct 2023US 2023/0313686 A1Beihang University
- Turbine blade29 Jun 2023US 2023/0203954 A1ROLLS-ROYCE plc
Most cited
By later US patents
- Heat pipe cooling for turbine stators381US 5,975,841 AThermal Corp. · 1999
- Evaporatively cooled rotor for a gas turbine engine345US 5,857,836 AAerodyne Research, Inc. · 1999
- Turbine blades28US 4,529,357 AROLLS-ROYCE plc · 1985
- Turbine stator aerofoil blades for gas turbine engines20US 4,207,027 AROLLS-ROYCE plc · 1980
- Gas turbine engine component with integrated heat pipe19US 9,909,448 B2General Electric Company · 2018