B21D 53/78
Propeller blades
Official title: propeller blades; turbine blades
B21D53/78 (Propeller blades) appears on 147 US grants and 134 published applications in this corpus.
Search patents in B21D- Granted patents
- 147
- Published applications
- 134
- Assignees
- 67
- Inventors
- 302
- Latest grant
- 26 May 2026
Filings by year
| Year | Granted patents | Published applications |
|---|---|---|
| 1976 | 1 | 0 |
| 1977 | 3 | 0 |
| 1978 | 1 | 0 |
| 1979 | 0 | 0 |
| 1980 | 1 | 0 |
| 1981 | 1 | 0 |
| 1982 | 0 | 0 |
| 1983 | 2 | 0 |
| 1984 | 0 | 0 |
| 1985 | 1 | 0 |
| 1986 | 1 | 0 |
| 1987 | 2 | 0 |
| 1988 | 1 | 0 |
| 1989 | 3 | 0 |
| 1990 | 0 | 0 |
| 1991 | 1 | 0 |
| 1992 | 3 | 0 |
| 1993 | 1 | 0 |
| 1994 | 2 | 0 |
| 1995 | 0 | 0 |
| 1996 | 0 | 0 |
| 1997 | 3 | 0 |
| 1998 | 2 | 0 |
| 1999 | 5 | 0 |
| 2000 | 0 | 0 |
| 2001 | 1 | 0 |
| 2002 | 2 | 0 |
| 2003 | 1 | 1 |
| 2004 | 1 | 3 |
| 2005 | 2 | 2 |
| 2006 | 0 | 3 |
| 2007 | 0 | 7 |
| 2008 | 2 | 2 |
| 2009 | 5 | 11 |
| 2010 | 4 | 10 |
| 2011 | 1 | 11 |
| 2012 | 6 | 5 |
| 2013 | 12 | 18 |
| 2014 | 11 | 5 |
| 2015 | 9 | 8 |
| 2016 | 11 | 7 |
| 2017 | 4 | 6 |
| 2018 | 8 | 6 |
| 2019 | 10 | 7 |
| 2020 | 9 | 11 |
| 2021 | 6 | 2 |
| 2022 | 3 | 2 |
| 2023 | 2 | 1 |
| 2024 | 1 | 4 |
| 2025 | 0 | 1 |
| 2026 | 2 | 1 |
By publication year. Applications have been published since 2001. 2026 runs to 8 Oct.
Recent patents
- Systems and methods for deformation correction of a gas turbine shroud26 May 2026US 12,636,694 B2GE Vernova Infrastructure Technology LLC
- Curved blade, preparation method thereof, and centrifugal impeller comprising the same10 Feb 2026US 12,546,325 B2Zhongshan Yibisi Technology Co., Ltd.
- Method for manufacturing a turbomachine compressor blade by compacting20 Feb 2024US 11,904,420 B2Safran Aircraft Engines
- Wind blade component bonding fixture15 Aug 2023US 11,725,624 B2TPI Composites, Inc.
- Manufacture of a hollow aerofoil27 Jun 2023US 11,684,997 B2ROLLS-ROYCE plc
- Method and apparatus for simultaneous hot formation of hollow component30 Apr 2026US 2026/0115780 A1ROLLS-ROYCE plc
- Curved blade, preparation method thereof, and centrifugal impeller comprising the same6 Feb 2025US 2025/0043685 A1Zhongshan Yibisi Technology Co., Ltd.
- Shaping apparatus for shaping a workpiece25 Jul 2024US 2024/0246311 A1Industrial Technology Research Institute
- Process used to shape items of equipment comprising a blade18 Jul 2024US 2024/0242335 A1Lisi Aerospace
- Systems and methods for deformation correction of a gas turbine shroud16 May 2024US 2024/0157424 A1General Electric Company
Most cited
By later US patents
- Metal forming methods57US 4,188,811 AChem-tronics, Inc. · 1980
- Hollow metal article fabrication45US 5,083,371 AUnited Technologies Corporation · 1992
- Aerofoil and a method of manufacturing an aerofoil41US 7,594,325 B2ROLLS-ROYCE plc · 2009
- Method of forming fiber and metal matrix composite30US 4,301,584 AUnited Technologies Corporation · 1981
- Process for manufacturing a hollow blade for a turbo-machine24US 5,636,440 ASociete Nationale d'Etude et de Construction de Moteurs D'Aviation "S.N.E.C.M A." · 1997