F03D 3/0481
And only with concentrating action, i.e. only increasing the airflow speed into
Official title: {and only with concentrating action, i.e. only increasing the airflow speed into the rotor, e.g. divergent outlets (F03D3/049 takes precedence)}
F03D3/0481 (And only with concentrating action, i.e. only increasing the airflow speed into) appears on 28 US grants and 32 published applications in this corpus.
Search patents in F03D- Granted patents
- 28
- Published applications
- 32
- Assignees
- 12
- Inventors
- 39
- Latest grant
- 13 Jul 2021
Filings by year
| Year | Granted patents | Published applications |
|---|---|---|
| 1980 | 2 | 0 |
| 1981 | 2 | 0 |
| 1982 | 0 | 0 |
| 1983 | 0 | 0 |
| 1984 | 1 | 0 |
| 1985 | 0 | 0 |
| 1986 | 1 | 0 |
| 1987 | 0 | 0 |
| 1988 | 0 | 0 |
| 1989 | 0 | 0 |
| 1990 | 1 | 0 |
| 1991 | 1 | 0 |
| 1992 | 1 | 0 |
| 1993 | 0 | 0 |
| 1994 | 0 | 0 |
| 1995 | 0 | 0 |
| 1996 | 0 | 0 |
| 1997 | 0 | 0 |
| 1998 | 0 | 0 |
| 1999 | 0 | 0 |
| 2000 | 0 | 0 |
| 2001 | 0 | 0 |
| 2002 | 0 | 0 |
| 2003 | 0 | 0 |
| 2004 | 0 | 1 |
| 2005 | 1 | 1 |
| 2006 | 2 | 1 |
| 2007 | 0 | 0 |
| 2008 | 0 | 1 |
| 2009 | 0 | 2 |
| 2010 | 2 | 9 |
| 2011 | 4 | 4 |
| 2012 | 3 | 3 |
| 2013 | 1 | 3 |
| 2014 | 1 | 0 |
| 2015 | 1 | 1 |
| 2016 | 1 | 1 |
| 2017 | 0 | 0 |
| 2018 | 0 | 2 |
| 2019 | 1 | 1 |
| 2020 | 1 | 1 |
| 2021 | 1 | 0 |
| 2022 | 0 | 0 |
| 2023 | 0 | 1 |
By publication year. Applications have been published since 2001.
Recent patents
- Fluid turbine systems10 Aug 2023US 2023/0250797 A1California Energy & Power
- Fluid turbine systems19 Nov 2020US 2020/0362813 A1California Energy & Power
- Wind rotating apparatus and wind power generator24 Oct 2019US 2019/0323481 A1Nguyen Chi Co., Ltd.
- Wind turbine8 Feb 2018US 2018/0038344 A1
- Fluid turbine systems8 Feb 2018US 2018/0038345 A1California Energy & Power
Most cited
By later US patents
- Wind dam electric generator and method102US 6,984,899 B1The United States of America as represented by the Secretary of the Navy · 2006
- Energy machine53US 5,083,899 AGeph Enterprises, Inc. · 1992
- Vertical axis wind powered generator45US 5,038,049 A1991
- Wind tower turbine35US 4,288,200 A1981
- Panemone wind turbine34US 4,260,325 A1981