B29D 99/0028
Hollow blades
Official title: {hollow blades}
B29D99/0028 (Hollow blades) appears on 424 US grants and 543 published applications in this corpus.
Search patents in B29D- Granted patents
- 424
- Published applications
- 543
- Assignees
- 141
- Inventors
- 880
- Latest grant
- 15 Sep 2026
Filings by year
| Year | Granted patents | Published applications |
|---|---|---|
| 1976 | 3 | 0 |
| 1977 | 0 | 0 |
| 1978 | 1 | 0 |
| 1979 | 1 | 0 |
| 1980 | 0 | 0 |
| 1981 | 3 | 0 |
| 1982 | 0 | 0 |
| 1983 | 2 | 0 |
| 1984 | 0 | 0 |
| 1985 | 3 | 0 |
| 1986 | 1 | 0 |
| 1987 | 4 | 0 |
| 1988 | 1 | 0 |
| 1989 | 1 | 0 |
| 1990 | 0 | 0 |
| 1991 | 0 | 0 |
| 1992 | 3 | 0 |
| 1993 | 1 | 0 |
| 1994 | 0 | 0 |
| 1995 | 4 | 0 |
| 1996 | 2 | 0 |
| 1997 | 0 | 0 |
| 1998 | 3 | 0 |
| 1999 | 1 | 0 |
| 2000 | 0 | 0 |
| 2001 | 1 | 0 |
| 2002 | 0 | 0 |
| 2003 | 0 | 3 |
| 2004 | 0 | 0 |
| 2005 | 0 | 0 |
| 2006 | 0 | 2 |
| 2007 | 0 | 1 |
| 2008 | 1 | 1 |
| 2009 | 1 | 4 |
| 2010 | 1 | 6 |
| 2011 | 7 | 11 |
| 2012 | 3 | 25 |
| 2013 | 14 | 14 |
| 2014 | 4 | 19 |
| 2015 | 12 | 23 |
| 2016 | 22 | 35 |
| 2017 | 11 | 16 |
| 2018 | 21 | 22 |
| 2019 | 22 | 37 |
| 2020 | 25 | 36 |
| 2021 | 33 | 36 |
| 2022 | 25 | 58 |
| 2023 | 40 | 61 |
| 2024 | 60 | 71 |
| 2025 | 59 | 37 |
| 2026 | 28 | 25 |
By publication year. Applications have been published since 2001. 2026 runs to 8 Oct.
Recent patents
- Method of manufacturing a shell of a wind turbine blade15 Sep 2026US 12,734,777 B2Lm Wind Power A/S
- Method for manufacturing a preform building element and oven25 Aug 2026US 12,715,180 B2Siemens Gamsea Renewable Energy A/S
- Blade assembly for a wind turbine blade, wind turbine and method for building a wind turbine blade25 Aug 2026US 12,716,398 B2Lm Wind Power A/S
- Method for manufacturing a wind turbine blade and fixture for manufacturing a wind turbine blade18 Aug 2026US 12,709,073 B2Siemens Gamesa Renewable Energy A/S
- Manufacturing of wind turbine blade spar cap18 Aug 2026US 12,709,074 B2Lm Wind Power A/S
- Systems and methods of manufacturing composite parts via stacking8 Oct 2026US 2026/0307353 A1GE Vernova Infrastructure Technology LLC
- Method of manufacturing shear webs for rotor blades10 Sep 2026US 2026/0264355 A1Lm Wind Power A/S
- Method of manufacturing a modular wind turbine rotor blade3 Sep 2026US 2026/0258779 A1Siemens Gamesa Renewable Energy A/S
- Mandrel for producing a hollow composite component of a wind turbine rotor blade27 Aug 2026US 2026/0249566 A1Lm Wind Power A/S
- Tool for manufacturing a wind turbine rotor blade and method for manufacturing wind turbine rotor blades27 Aug 2026US 2026/0249577 A1Nordex Energy GmbH
Most cited
By later US patents
- Lightweight propulsor blade with internal spars and rigid base members89US 5,129,787 AUnited Technologies Corporation · 1992
- Method of fabricating hollow composite airfoils83US 4,594,761 AGeneral Electric Company · 1986
- Method of making a part of large dimensions out of composite material74US 6,264,877 B1Alternatives Energies · 2001
- Method of manufacture of hollow pieces73US 3,967,996 A1976
- Method for the production of elongated resin impregnated filament composite structures53US 4,273,601 AStructural Composites Industries, Inc. · 1981