F03B 3/12
Blades
Official title: Blades; Blade-carrying rotors
F03B3/12 (Blades) appears on 360 US grants and 405 published applications in this corpus.
Search patents in F03B- Granted patents
- 360
- Published applications
- 405
- Assignees
- 213
- Inventors
- 756
- Latest grant
- 29 Sep 2026
Filings by year
| Year | Granted patents | Published applications |
|---|---|---|
| 1976 | 3 | 0 |
| 1977 | 2 | 0 |
| 1978 | 1 | 0 |
| 1979 | 1 | 0 |
| 1980 | 0 | 0 |
| 1981 | 1 | 0 |
| 1982 | 1 | 0 |
| 1983 | 1 | 0 |
| 1984 | 4 | 0 |
| 1985 | 2 | 0 |
| 1986 | 3 | 0 |
| 1987 | 3 | 0 |
| 1988 | 3 | 0 |
| 1989 | 0 | 0 |
| 1990 | 1 | 0 |
| 1991 | 2 | 0 |
| 1992 | 3 | 0 |
| 1993 | 2 | 0 |
| 1994 | 2 | 0 |
| 1995 | 5 | 0 |
| 1996 | 2 | 0 |
| 1997 | 2 | 0 |
| 1998 | 0 | 0 |
| 1999 | 12 | 0 |
| 2000 | 9 | 0 |
| 2001 | 5 | 1 |
| 2002 | 5 | 1 |
| 2003 | 4 | 1 |
| 2004 | 2 | 0 |
| 2005 | 1 | 7 |
| 2006 | 2 | 6 |
| 2007 | 6 | 5 |
| 2008 | 4 | 6 |
| 2009 | 2 | 12 |
| 2010 | 3 | 16 |
| 2011 | 5 | 26 |
| 2012 | 13 | 14 |
| 2013 | 17 | 24 |
| 2014 | 14 | 30 |
| 2015 | 5 | 27 |
| 2016 | 14 | 31 |
| 2017 | 20 | 16 |
| 2018 | 18 | 25 |
| 2019 | 28 | 19 |
| 2020 | 17 | 25 |
| 2021 | 30 | 30 |
| 2022 | 15 | 19 |
| 2023 | 18 | 12 |
| 2024 | 18 | 21 |
| 2025 | 22 | 16 |
| 2026 | 7 | 15 |
By publication year. Applications have been published since 2001. 2026 runs to 8 Oct.
Subgroups
Granted patents
Recent patents
- Hydraulic turbine29 Sep 2026US 12,747,716 B2Natel Energy Holdings, Inc.
- Horizontally-oriented conical-helical hydrokinetic turbine11 Aug 2026US 12,704,105 B2
- Turbine device, power apparatus and power integrated system of electric power system16 Jun 2026US 12,655,824 B2
- Split-type blade, fluid driving device and fluid driving proportional mixer19 May 2026US 12,629,648 B2Shanghai Vision Mechanical Joint Co., Ltd.
- Rotatable blade apparatus with individually adjustable blades10 Mar 2026US 12,571,370 B2Energyield LLC
- Performance of airfoils and hydrofoils8 Oct 2026US 2026/0307777 A1SJK Energy Solutions, LLC
- Hydroturbine piece of a turbine comprising a modified trailing edge8 Oct 2026US 2026/0309114 A1GE Renewable Technologies
- Hydroelectric power generation device and power generation method based on axial-flow hydraulic turbine1 Oct 2026US 2026/0298190 A1Hebei Water Conservancy Engr Bureau Group Limited
- Turbine blade17 Sep 2026US 2026/0275959 A1The University Court of the University of Edinburgh
- Power integrated system of electric power system17 Sep 2026US 2026/0275961 A1
Most cited
By later US patents
- Underwater ducted turbine101US 7,471,009 B2Clean Current Power Systems Incorporated · 2008
- Solar and wind energy generating system for a high rise building65US 5,394,016 A1995
- Kinetic hydro energy conversion system62US 4,613,279 ARiverside Energy Technology, Inc. · 1986
- Impeller having blade(s) conforming to the golden section of a logarithmic curve53US 6,702,552 B12004
- Turbine and like rotary machines48US 4,313,711 AThe English Electric Company Limited · 1982