F05B 2250/25
Helical
Official title: helical
F05B2250/25 (Helical) appears on 260 US grants and 319 published applications in this corpus.
Search patents in F05B- Granted patents
- 260
- Published applications
- 319
- Assignees
- 166
- Inventors
- 513
- Latest grant
- 11 Aug 2026
Filings by year
| Year | Granted patents | Published applications |
|---|---|---|
| 1976 | 3 | 0 |
| 1977 | 0 | 0 |
| 1978 | 2 | 0 |
| 1979 | 1 | 0 |
| 1980 | 2 | 0 |
| 1981 | 2 | 0 |
| 1982 | 1 | 0 |
| 1983 | 4 | 0 |
| 1984 | 2 | 0 |
| 1985 | 0 | 0 |
| 1986 | 3 | 0 |
| 1987 | 0 | 0 |
| 1988 | 2 | 0 |
| 1989 | 3 | 0 |
| 1990 | 2 | 0 |
| 1991 | 3 | 0 |
| 1992 | 2 | 0 |
| 1993 | 4 | 0 |
| 1994 | 5 | 0 |
| 1995 | 6 | 0 |
| 1996 | 4 | 0 |
| 1997 | 2 | 0 |
| 1998 | 0 | 0 |
| 1999 | 1 | 0 |
| 2000 | 3 | 0 |
| 2001 | 4 | 3 |
| 2002 | 6 | 7 |
| 2003 | 4 | 0 |
| 2004 | 0 | 3 |
| 2005 | 1 | 2 |
| 2006 | 4 | 8 |
| 2007 | 4 | 10 |
| 2008 | 4 | 24 |
| 2009 | 14 | 26 |
| 2010 | 10 | 36 |
| 2011 | 13 | 31 |
| 2012 | 13 | 26 |
| 2013 | 10 | 17 |
| 2014 | 21 | 14 |
| 2015 | 7 | 11 |
| 2016 | 12 | 6 |
| 2017 | 9 | 16 |
| 2018 | 7 | 15 |
| 2019 | 10 | 10 |
| 2020 | 9 | 9 |
| 2021 | 4 | 13 |
| 2022 | 8 | 10 |
| 2023 | 12 | 6 |
| 2024 | 8 | 5 |
| 2025 | 7 | 5 |
| 2026 | 2 | 6 |
By publication year. Applications have been published since 2001. 2026 runs to 8 Oct.
Recent patents
- Horizontally-oriented conical-helical hydrokinetic turbine11 Aug 2026US 12,704,105 B2
- Wind channelling and directing structures31 Mar 2026US 12,590,597 B2
- Low flow microbial fuel cell and hydro-kinetic turbine30 Dec 2025US 12,510,049 B1
- Energy generation controller for wind turbine with shadow-effect energy generator(s)9 Dec 2025US 12,492,677 B1International Business Machines Corporation
- Wind turbine with two sets of blades and aerogenerator4 Nov 2025US 12,460,615 B2Wattmakers LLC
- Aerodynamic devices and assemblies for towers6 Aug 2026US 2026/0226882 A1Nordex Energy Spain, S.A.U.
- Systems and methods for harvesting aerodynamic energy16 Apr 2026US 2026/0103084 A1
- Wind Turbine9 Apr 2026US 2026/0098515 A1Enturi Limited
- System for generating electricity via helicoid vertical axis wind turbine and method thereof2 Apr 2026US 2026/0092590 A1
- Solar Vortex Clamshell Greenhouse12 Mar 2026US 2026/0071608 A1
Most cited
By later US patents
- Wind turbine and a shaft for a wind turbine1,094US 8,664,792 B2Envision Energy (Denmark) ApS · 2014
- Gas turbine fuel injector115US 6,289,677 B1Pratt & Whitney Canada Corp. · 2001
- Electrical generating system82US 3,988,592 A1976
- Combined solar and wind powered generator with spiral blades67US 5,254,876 A1993
- Solar and wind energy generating system for a high rise building65US 5,394,016 A1995