B64C 11/001
Shrouded propellers
Official title: {Shrouded propellers}
B64C11/001 (Shrouded propellers) appears on 422 US grants and 513 published applications in this corpus.
Search patents in B64C- Granted patents
- 422
- Published applications
- 513
- Assignees
- 192
- Inventors
- 738
- Latest grant
- 18 Aug 2026
Filings by year
| Year | Granted patents | Published applications |
|---|---|---|
| 1976 | 1 | 0 |
| 1977 | 0 | 0 |
| 1978 | 0 | 0 |
| 1979 | 0 | 0 |
| 1980 | 0 | 0 |
| 1981 | 1 | 0 |
| 1982 | 0 | 0 |
| 1983 | 1 | 0 |
| 1984 | 1 | 0 |
| 1985 | 1 | 0 |
| 1986 | 0 | 0 |
| 1987 | 1 | 0 |
| 1988 | 1 | 0 |
| 1989 | 2 | 0 |
| 1990 | 0 | 0 |
| 1991 | 1 | 0 |
| 1992 | 2 | 0 |
| 1993 | 0 | 0 |
| 1994 | 1 | 0 |
| 1995 | 1 | 0 |
| 1996 | 0 | 0 |
| 1997 | 1 | 0 |
| 1998 | 3 | 0 |
| 1999 | 0 | 0 |
| 2000 | 1 | 0 |
| 2001 | 1 | 5 |
| 2002 | 4 | 10 |
| 2003 | 11 | 9 |
| 2004 | 6 | 9 |
| 2005 | 6 | 3 |
| 2006 | 5 | 10 |
| 2007 | 1 | 5 |
| 2008 | 1 | 5 |
| 2009 | 2 | 4 |
| 2010 | 3 | 1 |
| 2011 | 3 | 8 |
| 2012 | 2 | 3 |
| 2013 | 2 | 5 |
| 2014 | 4 | 4 |
| 2015 | 4 | 11 |
| 2016 | 8 | 19 |
| 2017 | 11 | 16 |
| 2018 | 11 | 26 |
| 2019 | 20 | 28 |
| 2020 | 23 | 76 |
| 2021 | 45 | 61 |
| 2022 | 75 | 82 |
| 2023 | 58 | 33 |
| 2024 | 48 | 28 |
| 2025 | 35 | 21 |
| 2026 | 14 | 31 |
By publication year. Applications have been published since 2001. 2026 runs to 8 Oct.
Recent patents
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Most cited
By later US patents
- Vertical takeoff and landing aircraft202US 6,892,980 B2Mitsubishi Heavy Industries, Ltd. · 2005
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- Flying device with improved movement on the ground101US 7,959,104 B22011
- Lifting platform71US 6,616,094 B2Vortex Holding Company · 2003