F03D 9/48
Using landscape topography
Official title: using landscape topography, e.g. valleys
F03D9/48 (Using landscape topography) appears on 15 US grants and 18 published applications in this corpus.
Search patents in F03D- Granted patents
- 15
- Published applications
- 18
- Assignees
- 9
- Inventors
- 41
- Latest grant
- 16 Apr 2024
Filings by year
| Year | Granted patents | Published applications |
|---|---|---|
| 1978 | 1 | 0 |
| 1979 | 0 | 0 |
| 1980 | 0 | 0 |
| 1981 | 0 | 0 |
| 1982 | 1 | 0 |
| 1983 | 0 | 0 |
| 1984 | 1 | 0 |
| 1985 | 1 | 0 |
| 1986 | 0 | 0 |
| 1987 | 0 | 0 |
| 1988 | 0 | 0 |
| 1989 | 1 | 0 |
| 1990 | 0 | 0 |
| 1991 | 0 | 0 |
| 1992 | 0 | 0 |
| 1993 | 0 | 0 |
| 1994 | 0 | 0 |
| 1995 | 0 | 0 |
| 1996 | 0 | 0 |
| 1997 | 0 | 0 |
| 1998 | 0 | 0 |
| 1999 | 0 | 0 |
| 2000 | 1 | 0 |
| 2001 | 0 | 0 |
| 2002 | 0 | 0 |
| 2003 | 0 | 0 |
| 2004 | 0 | 0 |
| 2005 | 0 | 1 |
| 2006 | 1 | 1 |
| 2007 | 1 | 1 |
| 2008 | 1 | 2 |
| 2009 | 0 | 1 |
| 2010 | 0 | 3 |
| 2011 | 2 | 0 |
| 2012 | 0 | 0 |
| 2013 | 0 | 1 |
| 2014 | 0 | 1 |
| 2015 | 1 | 0 |
| 2016 | 0 | 1 |
| 2017 | 1 | 1 |
| 2018 | 1 | 0 |
| 2019 | 0 | 2 |
| 2020 | 0 | 0 |
| 2021 | 0 | 0 |
| 2022 | 0 | 1 |
| 2023 | 0 | 1 |
| 2024 | 1 | 0 |
| 2025 | 0 | 0 |
| 2026 | 0 | 1 |
By publication year. Applications have been published since 2001. 2026 runs to 8 Oct.
Recent patents
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- A method for controlling a wind farm under turbulent wind conditions29 Sep 2022US 2022/0307475 A1Vestas Wind Systems A/S
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Most cited
By later US patents
- Wind driven, high altitude power apparatus65US 4,084,102 A1978
- Energy storage system63US 7,254,944 B1Ventoso Systems, LLC · 2007
- Method of and means for generating electricity in an arid environment using elongated open or enclosed ducts27US 4,801,811 AGeophysical Engineering Company · 1989
- Bi-directional wind power generator26US 4,321,476 A1982
- Wind energy system19US 7,368,828 B12008