B64C 11/00
Propellers
Official title: Propellers, e.g. of ducted type; Features common to propellers and rotors for rotorcraft
B64C11/00 (Propellers) appears on 3,007 US grants and 3,082 published applications in this corpus.
Search patents in B64C- Granted patents
- 3,007
- Published applications
- 3,082
- Assignees
- 672
- Inventors
- 4,071
- Latest grant
- 6 Oct 2026
Filings by year
| Year | Granted patents | Published applications |
|---|---|---|
| 1976 | 5 | 0 |
| 1977 | 8 | 0 |
| 1978 | 8 | 0 |
| 1979 | 7 | 0 |
| 1980 | 4 | 0 |
| 1981 | 8 | 0 |
| 1982 | 6 | 0 |
| 1983 | 13 | 0 |
| 1984 | 11 | 0 |
| 1985 | 12 | 0 |
| 1986 | 17 | 0 |
| 1987 | 29 | 0 |
| 1988 | 27 | 0 |
| 1989 | 26 | 0 |
| 1990 | 43 | 0 |
| 1991 | 28 | 0 |
| 1992 | 41 | 0 |
| 1993 | 31 | 0 |
| 1994 | 21 | 0 |
| 1995 | 15 | 0 |
| 1996 | 3 | 0 |
| 1997 | 9 | 0 |
| 1998 | 17 | 0 |
| 1999 | 13 | 0 |
| 2000 | 20 | 0 |
| 2001 | 14 | 6 |
| 2002 | 26 | 23 |
| 2003 | 29 | 21 |
| 2004 | 15 | 23 |
| 2005 | 14 | 14 |
| 2006 | 12 | 19 |
| 2007 | 12 | 19 |
| 2008 | 4 | 22 |
| 2009 | 8 | 31 |
| 2010 | 13 | 48 |
| 2011 | 19 | 71 |
| 2012 | 39 | 61 |
| 2013 | 36 | 92 |
| 2014 | 68 | 76 |
| 2015 | 73 | 106 |
| 2016 | 90 | 137 |
| 2017 | 109 | 194 |
| 2018 | 126 | 240 |
| 2019 | 244 | 249 |
| 2020 | 274 | 298 |
| 2021 | 213 | 250 |
| 2022 | 259 | 264 |
| 2023 | 267 | 188 |
| 2024 | 243 | 222 |
| 2025 | 249 | 179 |
| 2026 | 129 | 229 |
By publication year. Applications have been published since 2001. 2026 runs to 8 Oct.
Subgroups
Granted patents
- B64C 11/16Blades911
- B64C 11/30Blade pitch-changing mechanisms897
- B64C 11/02Hub construction662
- B64C 11/46Arrangements of, or constructional features peculiar to, multiple propellers506
- B64C 11/001Shrouded propellers422
- B64C 11/008Propellers: characterised by vibration absorbing or balancing means88
- B64C 11/006Paddle wheels38
- B64C 11/003Variable-diameter propellers35
Recent patents
- Propulsion device, propulsion control device, and computer readable storage medium6 Oct 2026US 12,752,907 B2Denso Corporation
- Propulsor assembly with teeter mechanism6 Oct 2026US 12,752,908 B2Beta Air, LLC
- Blade, flying object, and manufacturing method thereof6 Oct 2026US 12,752,909 B2Mitsui Chemicals, Inc.
- Energy recovery system and method for an aircraft6 Oct 2026US 12,752,925 B2Airbus Operations S.L.U.
- Nose cone with air scoop for open rotor propulsion system29 Sep 2026US 12,747,694 B2Rtx Corporation
- Variable-pitch assembly for a turbomachine fan8 Oct 2026US 2026/0307778 A1Safran Aircraft Engines
- Propeller and method for safely releasing a ruptured blade8 Oct 2026US 2026/0307779 A1Airbus Operations S.L.U.
- Variable-pitch propeller passively controlled by thrust8 Oct 2026US 2026/0307780 A1Lockheed Martin Corporation
- Peak Efficiency Propeller Control8 Oct 2026US 2026/0307781 A1Pipistrel d.o.o.
- Systems and Methods for Manufacturing Composite Laminate Structures8 Oct 2026US 2026/0307787 A1
Most cited
By later US patents
- Vertical takeoff and landing aircraft202US 6,892,980 B2Mitsubishi Heavy Industries, Ltd. · 2005
- Aerodynamically efficient lightweight vertical take-off and landing aircraft with pivoting rotors and stowing rotor blades170US 9,694,911 B2Joby Aviation, Inc. · 2017
- Polypeptide cartilage-inducing factors found in bone152US 4,774,322 ACollagen Corporation · 1988
- Forward swept rotor blade138US 5,167,489 AGeneral Electric Company · 1992
- Apparatus and method for vertical take-off and landing aircraft132US 7,874,513 B12011