F05B 2250/71
Curved
Official title: curved
F05B2250/71 (Curved) appears on 163 US grants and 239 published applications in this corpus.
Search patents in F05B- Granted patents
- 163
- Published applications
- 239
- Assignees
- 132
- Inventors
- 419
- Latest grant
- 28 Apr 2026
Filings by year
| Year | Granted patents | Published applications |
|---|---|---|
| 1980 | 1 | 0 |
| 1981 | 0 | 0 |
| 1982 | 0 | 0 |
| 1983 | 1 | 0 |
| 1984 | 0 | 0 |
| 1985 | 0 | 0 |
| 1986 | 0 | 0 |
| 1987 | 0 | 0 |
| 1988 | 0 | 0 |
| 1989 | 0 | 0 |
| 1990 | 0 | 0 |
| 1991 | 0 | 0 |
| 1992 | 0 | 0 |
| 1993 | 0 | 0 |
| 1994 | 1 | 0 |
| 1995 | 1 | 0 |
| 1996 | 0 | 0 |
| 1997 | 0 | 0 |
| 1998 | 0 | 0 |
| 1999 | 0 | 0 |
| 2000 | 0 | 0 |
| 2001 | 2 | 0 |
| 2002 | 0 | 0 |
| 2003 | 0 | 0 |
| 2004 | 0 | 2 |
| 2005 | 0 | 1 |
| 2006 | 0 | 2 |
| 2007 | 2 | 6 |
| 2008 | 0 | 2 |
| 2009 | 2 | 20 |
| 2010 | 7 | 20 |
| 2011 | 10 | 22 |
| 2012 | 8 | 13 |
| 2013 | 12 | 15 |
| 2014 | 6 | 4 |
| 2015 | 5 | 10 |
| 2016 | 9 | 10 |
| 2017 | 9 | 11 |
| 2018 | 10 | 13 |
| 2019 | 13 | 16 |
| 2020 | 11 | 14 |
| 2021 | 17 | 19 |
| 2022 | 9 | 16 |
| 2023 | 13 | 7 |
| 2024 | 7 | 6 |
| 2025 | 4 | 6 |
| 2026 | 3 | 4 |
By publication year. Applications have been published since 2001. 2026 runs to 8 Oct.
Subgroups
Granted patents
Recent patents
- Hydropower device combining lift and drag effects28 Apr 2026US 12,612,892 B2Jiangsu University
- Centrifugal compressor impeller with nonlinear backwall28 Apr 2026US 12,612,923 B1Ingersoll-Rand Industrial U.S., Inc.
- Vertical wind turbine connected to the rotating tower27 Jan 2026US 12,535,051 B2
- Guide vane30 Sep 2025US 12,428,967 B2ANDRITZ HYDRO GmbH
- Vertical axis wind turbine generator19 Aug 2025US 12,392,320 B2
- Centrifugal compressor impeller with nonlinear backwall13 Aug 2026US 2026/0235138 A1
- Flow modifying element for wind turbine blade9 Jul 2026US 2026/0194039 A1
- Serrated panel for a wind turbine rotor blade30 Apr 2026US 2026/0117738 A1Nordex Energy GmbH
- Centrifugal compressor impeller with nonlinear backwall30 Apr 2026US 2026/0117788 A1Ingersoll-Rand Industrial U.S., Inc.
- Modular envelope hydrodynamic electrification system18 Sep 2025US 2025/0290483 A1GenH Inc.
Most cited
By later US patents
- Fan inlet with curved lip and cylindrical member forming labyrinth seal58US 5,423,660 AAirflow Research and Manufacturing Corporation · 1995
- System and method for extracting power from fluid using a Tesla-type bladeless turbine29US 8,801,359 B22014
- Fluid energy converter27US 7,600,963 B2Viryd Technologies Inc. · 2009
- Wind power device26US 6,249,059 B12001
- Golden ratio axial flow apparatus25US 9,328,717 B12016