F04D 29/665
By means of resonance chambers or interference
Official title: {by means of resonance chambers or interference}
F04D29/665 (By means of resonance chambers or interference) appears on 254 US grants and 299 published applications in this corpus.
Search patents in F04D- Granted patents
- 254
- Published applications
- 299
- Assignees
- 193
- Inventors
- 772
- Latest grant
- 8 Sep 2026
Filings by year
| Year | Granted patents | Published applications |
|---|---|---|
| 1977 | 1 | 0 |
| 1978 | 1 | 0 |
| 1979 | 1 | 0 |
| 1980 | 0 | 0 |
| 1981 | 1 | 0 |
| 1982 | 0 | 0 |
| 1983 | 0 | 0 |
| 1984 | 1 | 0 |
| 1985 | 0 | 0 |
| 1986 | 0 | 0 |
| 1987 | 0 | 0 |
| 1988 | 0 | 0 |
| 1989 | 0 | 0 |
| 1990 | 2 | 0 |
| 1991 | 1 | 0 |
| 1992 | 0 | 0 |
| 1993 | 0 | 0 |
| 1994 | 4 | 0 |
| 1995 | 1 | 0 |
| 1996 | 1 | 0 |
| 1997 | 2 | 0 |
| 1998 | 2 | 0 |
| 1999 | 2 | 0 |
| 2000 | 1 | 0 |
| 2001 | 1 | 1 |
| 2002 | 4 | 3 |
| 2003 | 4 | 4 |
| 2004 | 1 | 2 |
| 2005 | 3 | 3 |
| 2006 | 3 | 5 |
| 2007 | 1 | 4 |
| 2008 | 2 | 9 |
| 2009 | 2 | 3 |
| 2010 | 7 | 7 |
| 2011 | 6 | 12 |
| 2012 | 5 | 5 |
| 2013 | 3 | 10 |
| 2014 | 1 | 17 |
| 2015 | 9 | 19 |
| 2016 | 10 | 20 |
| 2017 | 25 | 24 |
| 2018 | 23 | 24 |
| 2019 | 29 | 20 |
| 2020 | 16 | 22 |
| 2021 | 17 | 8 |
| 2022 | 12 | 16 |
| 2023 | 16 | 15 |
| 2024 | 17 | 16 |
| 2025 | 10 | 14 |
| 2026 | 6 | 16 |
By publication year. Applications have been published since 2001. 2026 runs to 8 Oct.
Recent patents
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