F05D 2220/321
For a special turbine stage
Official title: for a special turbine stage
F05D2220/321 (For a special turbine stage) appears on 671 US grants and 743 published applications in this corpus.
Search patents in F05D- Granted patents
- 671
- Published applications
- 743
- Assignees
- 104
- Inventors
- 1,512
- Latest grant
- 6 Oct 2026
Filings by year
| Year | Granted patents | Published applications |
|---|---|---|
| 1997 | 1 | 0 |
| 1998 | 0 | 0 |
| 1999 | 0 | 0 |
| 2000 | 0 | 0 |
| 2001 | 0 | 0 |
| 2002 | 0 | 0 |
| 2003 | 1 | 1 |
| 2004 | 5 | 6 |
| 2005 | 6 | 9 |
| 2006 | 2 | 6 |
| 2007 | 5 | 11 |
| 2008 | 7 | 13 |
| 2009 | 12 | 15 |
| 2010 | 6 | 13 |
| 2011 | 11 | 9 |
| 2012 | 11 | 16 |
| 2013 | 10 | 21 |
| 2014 | 18 | 25 |
| 2015 | 9 | 28 |
| 2016 | 18 | 68 |
| 2017 | 23 | 38 |
| 2018 | 30 | 67 |
| 2019 | 71 | 66 |
| 2020 | 116 | 124 |
| 2021 | 87 | 60 |
| 2022 | 85 | 28 |
| 2023 | 43 | 37 |
| 2024 | 39 | 35 |
| 2025 | 36 | 29 |
| 2026 | 19 | 18 |
By publication year. Applications have been published since 2001. 2026 runs to 8 Oct.
Subgroups
Granted patents
Recent patents
- Airfoil having flex elements with compliance structure6 Oct 2026US 12,753,699 B1GE Vernova Infrastructure Technology LLC
- Turbine tip shroud removal feature29 Sep 2026US 12,747,667 B2Solar Turbines Incorporated
- Turbine nozzle alignment with combustor of gas turbine engines14 Jul 2026US 12,680,460 B1General Electric Company
- Forward load reduction structures for aft-most stages of high pressure compressors14 Jul 2026US 12,680,557 B2General Electric Company
- Gas turbine engine2 Jun 2026US 12,644,386 B2General Electric Company
- Gas turbine engines with blade assemblies having cooling holes3 Sep 2026US 2026/0258731 A1General Electric Company
- Double-section spring element6 Aug 2026US 2026/0226986 A1Rolls-Royce Deutschland Ltd & Co KG
- Compressor bleed slot diffuser30 Jul 2026US 2026/0218652 A1Pratt & Whitney Canada Corp.
- More compact aircraft propulsion system23 Jul 2026US 2026/0210297 A1Safran Aircraft Engines
- Coating for Aluminum Alloy Aerostructures2 Jul 2026US 2026/0185451 A1Rtx Corporation
Most cited
By later US patents
- Airfoil shape for a turbine bucket97US 6,854,961 B2General Electric Company · 2005
- Second stage turbine bucket airfoil78US 6,685,434 B1General Electric Company · 2004
- Cantilevered framework support for turbine vane64US 7,762,766 B2Siemens Energy, Inc. · 2010
- LP turbine vane airfoil profile59US 7,367,779 B2Pratt & Whitney Canada Corp. · 2008
- Multiple staged compressor with last stage airfoil cooling57US 8,858,161 B1Florida Turbine Technologies, Inc. · 2014