F05D 2250/13
Trapezoidal
Official title: trapezoidal
F05D2250/13 (Trapezoidal) appears on 287 US grants and 349 published applications in this corpus.
Search patents in F05D- Granted patents
- 287
- Published applications
- 349
- Assignees
- 109
- Inventors
- 858
- Latest grant
- 14 Apr 2026
Filings by year
| Year | Granted patents | Published applications |
|---|---|---|
| 1987 | 1 | 0 |
| 1988 | 0 | 0 |
| 1989 | 0 | 0 |
| 1990 | 0 | 0 |
| 1991 | 0 | 0 |
| 1992 | 0 | 0 |
| 1993 | 1 | 0 |
| 1994 | 1 | 0 |
| 1995 | 0 | 0 |
| 1996 | 2 | 0 |
| 1997 | 1 | 0 |
| 1998 | 0 | 0 |
| 1999 | 0 | 0 |
| 2000 | 0 | 0 |
| 2001 | 0 | 2 |
| 2002 | 2 | 1 |
| 2003 | 3 | 3 |
| 2004 | 2 | 3 |
| 2005 | 1 | 4 |
| 2006 | 6 | 8 |
| 2007 | 3 | 6 |
| 2008 | 4 | 9 |
| 2009 | 8 | 3 |
| 2010 | 2 | 10 |
| 2011 | 3 | 12 |
| 2012 | 4 | 10 |
| 2013 | 7 | 13 |
| 2014 | 8 | 13 |
| 2015 | 11 | 12 |
| 2016 | 11 | 23 |
| 2017 | 11 | 18 |
| 2018 | 13 | 29 |
| 2019 | 30 | 41 |
| 2020 | 32 | 25 |
| 2021 | 30 | 18 |
| 2022 | 20 | 22 |
| 2023 | 23 | 24 |
| 2024 | 25 | 18 |
| 2025 | 18 | 11 |
| 2026 | 4 | 11 |
By publication year. Applications have been published since 2001. 2026 runs to 8 Oct.
Subgroups
Granted patents
Recent patents
- Radially captured in situ balancing masses for aircraft powerplant14 Apr 2026US 12,601,263 B1Pratt & Whitney Canada Corp.
- Mechanical assembly for the transmission of axial forces between at least two rotor parts of a turbomachine and method for producing a variable threading for such an assembly10 Feb 2026US 12,546,222 B2Safran Aircraft Engines
- Sealing strip element and sealing arrangement comprising said sealing strip element3 Feb 2026US 12,540,674 B2Siemens Energy Global GmbH & Co. KG
- Element and method for compensation of tolerances and/or gap widths of a device and engine, assembly method for a shaft/hub connection13 Jan 2026US 12,523,160 B2Universität der Bundeswehr München
- Vane array structure with recessed stator vanes18 Nov 2025US 12,473,835 B2Pratt & Whitney Canada Corp.
- Gas turbine structural component24 Sep 2026US 2026/0286861 A1
- Airfoil for a turbine engine27 Aug 2026US 2026/0251067 A1General Electric Company
- Cylinder for combustor, combustor, and gas turbine13 Aug 2026US 2026/0235052 A1Mitsubishi Heavy Industries, Ltd.
- Blading system for axial compressors with axially opposing base merged double triangular prism device blades6 Aug 2026US 2026/0226914 A1Spacerolls Aerospace Technologies Private Limited
- Variable Vane Lever Arm30 Jul 2026US 2026/0218624 A1Rtx Corporation
Most cited
By later US patents
- High pressure gas generator rotor tie rod system for gas turbine engine130US 5,537,814 AGeneral Electric Company · 1996
- Compound tip notched blade80US 6,790,005 B2General Electric Company · 2004
- Reinforced compressor rotor coupling76US 5,628,621 AGeneral Electric Company · 1997
- Shroud segment and assembly with surface recessed seal bridging adjacent members73US 6,893,214 B2General Electric Company · 2005
- Airfoil with three-pass serpentine cooling channel and microcircuit47US 7,131,818 B2United Technologies Corporation · 2006