F05D 2250/71
Curved
Official title: curved
F05D2250/71 (Curved) appears on 1,041 US grants and 1,150 published applications in this corpus.
Search patents in F05D- Granted patents
- 1,041
- Published applications
- 1,150
- Assignees
- 250
- Inventors
- 2,334
- Latest grant
- 25 Aug 2026
Filings by year
| Year | Granted patents | Published applications |
|---|---|---|
| 1976 | 2 | 0 |
| 1977 | 0 | 0 |
| 1978 | 2 | 0 |
| 1979 | 2 | 0 |
| 1980 | 1 | 0 |
| 1981 | 0 | 0 |
| 1982 | 0 | 0 |
| 1983 | 2 | 0 |
| 1984 | 0 | 0 |
| 1985 | 0 | 0 |
| 1986 | 0 | 0 |
| 1987 | 1 | 0 |
| 1988 | 1 | 0 |
| 1989 | 0 | 0 |
| 1990 | 1 | 0 |
| 1991 | 0 | 0 |
| 1992 | 3 | 0 |
| 1993 | 1 | 0 |
| 1994 | 4 | 0 |
| 1995 | 0 | 0 |
| 1996 | 2 | 0 |
| 1997 | 2 | 0 |
| 1998 | 2 | 0 |
| 1999 | 2 | 0 |
| 2000 | 1 | 0 |
| 2001 | 9 | 6 |
| 2002 | 18 | 5 |
| 2003 | 9 | 10 |
| 2004 | 8 | 10 |
| 2005 | 5 | 14 |
| 2006 | 9 | 20 |
| 2007 | 17 | 31 |
| 2008 | 15 | 21 |
| 2009 | 13 | 35 |
| 2010 | 27 | 36 |
| 2011 | 17 | 34 |
| 2012 | 28 | 34 |
| 2013 | 27 | 45 |
| 2014 | 33 | 43 |
| 2015 | 43 | 72 |
| 2016 | 35 | 93 |
| 2017 | 41 | 90 |
| 2018 | 64 | 75 |
| 2019 | 89 | 83 |
| 2020 | 109 | 81 |
| 2021 | 83 | 67 |
| 2022 | 86 | 62 |
| 2023 | 80 | 73 |
| 2024 | 64 | 50 |
| 2025 | 60 | 36 |
| 2026 | 23 | 24 |
By publication year. Applications have been published since 2001. 2026 runs to 8 Oct.
Subgroups
Granted patents
Recent patents
- Turbine blade with boomerang shaped wall cooling passages25 Aug 2026US 12,716,359 B2Rtx Corporation
- Air leakage restrictor arrangement for an aircraft powerplant25 Aug 2026US 12,716,360 B2Pratt & Whitney Canada Corp.
- Annulus contouring4 Aug 2026US 12,698,713 B2MTU Aero Engines AG
- Turbine component having pin-fin cooling structure, and gas turbine including same16 Jun 2026US 12,655,768 B2Doosan Enerbility Co., Ltd.
- Turbine rotor dovetail structure with splines9 Jun 2026US 12,650,082 B2Pratt & Whitney Canada Corp.
- Airfoils for gas turbine engines24 Sep 2026US 2026/0286849 A1General Electric Company
- Compressor wheel and centrifugal compressor24 Sep 2026US 2026/0286971 A1Mitsubishi Heavy Industries Engine & Turbocharger, Ltd.
- Turbine blade and gas turbine20 Aug 2026US 2026/0243169 A1Mitsubishi Heavy Industries, Ltd.
- Turbine or compressor stage assembly13 Aug 2026US 2026/0235034 A1
- Centrifugal compressor impeller with nonlinear backwall13 Aug 2026US 2026/0235138 A1
Most cited
By later US patents
- Film cooling hole for turbine airfoil313US 7,997,868 B1Florida Turbine Technologies, Inc. · 2011
- Curved centerline air intake for a gas turbine engine171US 4,220,171 AThe United States of America as represented by the Administrator of the National Aeronautics and Space Administration · 1980
- Chevron exhaust nozzle for a gas turbine engine137US 6,360,528 B1General Electric Company · 2002
- Film cooling passages with curved corners103US 4,684,323 AUnited Technologies Corporation · 1987
- Swept turbomachinery blade99US 5,642,985 AUnited Technologies Corporation · 1997