F03D 3/02
Wind motors with rotation axis substantially perpendicular to the air flow entering
Official title: having a plurality of rotors
F03D3/02 (Wind motors with rotation axis substantially perpendicular to the air flow entering) appears on 330 US grants and 483 published applications in this corpus.
Search patents in F03D- Granted patents
- 330
- Published applications
- 483
- Assignees
- 168
- Inventors
- 641
- Latest grant
- 22 Sep 2026
Filings by year
| Year | Granted patents | Published applications |
|---|---|---|
| 1976 | 2 | 0 |
| 1977 | 5 | 0 |
| 1978 | 4 | 0 |
| 1979 | 3 | 0 |
| 1980 | 2 | 0 |
| 1981 | 4 | 0 |
| 1982 | 3 | 0 |
| 1983 | 1 | 0 |
| 1984 | 1 | 0 |
| 1985 | 1 | 0 |
| 1986 | 3 | 0 |
| 1987 | 0 | 0 |
| 1988 | 1 | 0 |
| 1989 | 2 | 0 |
| 1990 | 1 | 0 |
| 1991 | 2 | 0 |
| 1992 | 0 | 0 |
| 1993 | 1 | 0 |
| 1994 | 2 | 0 |
| 1995 | 0 | 0 |
| 1996 | 1 | 0 |
| 1997 | 2 | 0 |
| 1998 | 0 | 0 |
| 1999 | 1 | 0 |
| 2000 | 2 | 0 |
| 2001 | 3 | 3 |
| 2002 | 0 | 4 |
| 2003 | 2 | 5 |
| 2004 | 4 | 5 |
| 2005 | 5 | 6 |
| 2006 | 4 | 6 |
| 2007 | 2 | 12 |
| 2008 | 3 | 11 |
| 2009 | 3 | 21 |
| 2010 | 3 | 45 |
| 2011 | 9 | 35 |
| 2012 | 18 | 34 |
| 2013 | 22 | 37 |
| 2014 | 15 | 41 |
| 2015 | 21 | 31 |
| 2016 | 13 | 25 |
| 2017 | 27 | 16 |
| 2018 | 11 | 12 |
| 2019 | 13 | 21 |
| 2020 | 18 | 14 |
| 2021 | 17 | 21 |
| 2022 | 11 | 14 |
| 2023 | 20 | 13 |
| 2024 | 17 | 29 |
| 2025 | 20 | 10 |
| 2026 | 5 | 12 |
By publication year. Applications have been published since 2001. 2026 runs to 8 Oct.
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Most cited
By later US patents
- Wind motor rotor having substantially constant pressure and relative velocity for airflow therethrough90US 4,084,918 ATurbomachines, Inc. · 1978
- System for the obtainment and the regulation of energy starting from air, sea and river currents67US 4,236,866 A1980
- Wind-turbines65US 4,156,580 A1979
- High density-third dimension geometry solar panels63US 4,023,368 A1977
- Flying electric generators with clean air rotors63US 9,388,794 B22016