F03D 3/04
Wind motors with rotation axis substantially perpendicular to the air flow entering
Official title: having stationary wind-guiding means, e.g. with shrouds or channels (F03D9/35 takes precedence)
F03D3/04 (Wind motors with rotation axis substantially perpendicular to the air flow entering) appears on 553 US grants and 681 published applications in this corpus.
Search patents in F03D- Granted patents
- 553
- Published applications
- 681
- Assignees
- 208
- Inventors
- 951
- Latest grant
- 16 Jun 2026
Filings by year
| Year | Granted patents | Published applications |
|---|---|---|
| 1976 | 6 | 0 |
| 1977 | 8 | 0 |
| 1978 | 8 | 0 |
| 1979 | 9 | 0 |
| 1980 | 7 | 0 |
| 1981 | 6 | 0 |
| 1982 | 7 | 0 |
| 1983 | 3 | 0 |
| 1984 | 5 | 0 |
| 1985 | 3 | 0 |
| 1986 | 5 | 0 |
| 1987 | 1 | 0 |
| 1988 | 4 | 0 |
| 1989 | 4 | 0 |
| 1990 | 1 | 0 |
| 1991 | 5 | 0 |
| 1992 | 1 | 0 |
| 1993 | 1 | 0 |
| 1994 | 7 | 0 |
| 1995 | 7 | 0 |
| 1996 | 4 | 0 |
| 1997 | 2 | 0 |
| 1998 | 2 | 0 |
| 1999 | 2 | 0 |
| 2000 | 3 | 0 |
| 2001 | 5 | 1 |
| 2002 | 4 | 8 |
| 2003 | 8 | 11 |
| 2004 | 5 | 13 |
| 2005 | 12 | 7 |
| 2006 | 7 | 12 |
| 2007 | 7 | 24 |
| 2008 | 5 | 24 |
| 2009 | 6 | 31 |
| 2010 | 18 | 67 |
| 2011 | 21 | 48 |
| 2012 | 33 | 47 |
| 2013 | 30 | 53 |
| 2014 | 26 | 39 |
| 2015 | 26 | 36 |
| 2016 | 22 | 32 |
| 2017 | 37 | 19 |
| 2018 | 20 | 35 |
| 2019 | 24 | 20 |
| 2020 | 26 | 28 |
| 2021 | 20 | 20 |
| 2022 | 19 | 26 |
| 2023 | 15 | 24 |
| 2024 | 17 | 23 |
| 2025 | 23 | 19 |
| 2026 | 6 | 14 |
By publication year. Applications have been published since 2001. 2026 runs to 8 Oct.
Subgroups
Granted patents
Recent patents
- Turbine device, power apparatus and power integrated system of electric power system16 Jun 2026US 12,655,824 B2
- Vertical wind turbine with external shroud comprising first and second shroud wings26 May 2026US 12,638,003 B2
- Wind channelling and directing structures31 Mar 2026US 12,590,597 B2
- Energy conversion device, associated systems and methods24 Mar 2026US 12,587,065 B2GIG Energy LLC
- Vertical-axis wind turbine systems and devices10 Mar 2026US 12,571,368 B2
- Wind Power Generation Device8 Oct 2026US 2026/0309125 A1
- Power integrated system of electric power system17 Sep 2026US 2026/0275961 A1
- Vertical axis wind turbine10 Sep 2026US 2026/0266259 A1Panemondial Ltd
- Power plant with vertical axis wind turbines13 Aug 2026US 2026/0235103 A1Energypier AG
- Energy conversion device, associated systems and methods23 Jul 2026US 2026/0213616 A1GIG Energy LLC
Most cited
By later US patents
- Wind and solar electric generating plant109US 4,551,631 A1985
- Wind dam electric generator and method102US 6,984,899 B1The United States of America as represented by the Secretary of the Navy · 2006
- Hybrid energy recovery system101US 6,172,429 B22001
- Venturi effect charging system for automobile batteries92US 5,280,827 A1994
- Wind motor rotor having substantially constant pressure and relative velocity for airflow therethrough90US 4,084,918 ATurbomachines, Inc. · 1978