B64C 11/46
Arrangements of, or constructional features peculiar to, multiple propellers
Official title: Arrangements of, or constructional features peculiar to, multiple propellers {(B64C11/306 takes precedence)}
B64C11/46 (Arrangements of, or constructional features peculiar to, multiple propellers) appears on 506 US grants and 572 published applications in this corpus.
Search patents in B64C- Granted patents
- 506
- Published applications
- 572
- Assignees
- 191
- Inventors
- 826
- Latest grant
- 22 Sep 2026
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| Year | Granted patents | Published applications |
|---|---|---|
| 1981 | 1 | 0 |
| 1982 | 0 | 0 |
| 1983 | 0 | 0 |
| 1984 | 1 | 0 |
| 1985 | 1 | 0 |
| 1986 | 2 | 0 |
| 1987 | 3 | 0 |
| 1988 | 2 | 0 |
| 1989 | 1 | 0 |
| 1990 | 10 | 0 |
| 1991 | 4 | 0 |
| 1992 | 6 | 0 |
| 1993 | 4 | 0 |
| 1994 | 4 | 0 |
| 1995 | 2 | 0 |
| 1996 | 1 | 0 |
| 1997 | 0 | 0 |
| 1998 | 5 | 0 |
| 1999 | 1 | 0 |
| 2000 | 0 | 0 |
| 2001 | 0 | 4 |
| 2002 | 4 | 9 |
| 2003 | 9 | 5 |
| 2004 | 4 | 8 |
| 2005 | 2 | 0 |
| 2006 | 2 | 1 |
| 2007 | 0 | 2 |
| 2008 | 0 | 2 |
| 2009 | 1 | 1 |
| 2010 | 1 | 17 |
| 2011 | 2 | 16 |
| 2012 | 6 | 21 |
| 2013 | 10 | 10 |
| 2014 | 19 | 8 |
| 2015 | 11 | 15 |
| 2016 | 8 | 17 |
| 2017 | 19 | 31 |
| 2018 | 20 | 40 |
| 2019 | 40 | 44 |
| 2020 | 46 | 69 |
| 2021 | 51 | 52 |
| 2022 | 56 | 55 |
| 2023 | 41 | 37 |
| 2024 | 40 | 37 |
| 2025 | 42 | 24 |
| 2026 | 24 | 47 |
By publication year. Applications have been published since 2001. 2026 runs to 8 Oct.
Subgroups
Granted patents
Recent patents
- Aircraft with an unducted fan propulsor22 Sep 2026US 12,741,747 B2General Electric Company
- Rotor assembly8 Sep 2026US 12,728,984 B2Vertical Aerospace Group Limited
- Methods and systems for retaining lateral control of an unmanned aerial vehicle during landing with leveled inboard propellers1 Sep 2026US 12,722,774 B2AeroVironment, Inc.
- Helix tilt device for tilting coaxial propulsion system25 Aug 2026US 12,715,626 B2Lockheed Martin Corporation
- Aircraft with an unducted fan propulsor18 Aug 2026US 12,709,398 B2General Electric Company
- Aircraft with an unducted fan propulsor8 Oct 2026US 2026/0307811 A1General Electric Company
- System, assemblies and methods for mechanical-thrust power conversion multifans1 Oct 2026US 2026/0296640 A1N.M.B. Medical Applications Ltd
- Aircraft with an unducted fan propulsor1 Oct 2026US 2026/0296653 A1General Electric Company
- Unducted Propulsion System24 Sep 2026US 2026/0285476 A1General Electric Company
- Aircraft with an unducted fan propulsor24 Sep 2026US 2026/0285489 A1General Electric Company
Most cited
By later US patents
- Unducted, counterrotating gearless front fan engine107US 4,976,102 AGeneral Electric Company · 1990
- Noise reduction in aircraft propellers100US 5,190,441 AGeneral Electric Company · 1993
- Ultra-efficient propulsor with an augmentor fan circumscribing a turbofan98US 8,689,538 B2The Boeing Company · 2014
- Vertical-takeoff aircraft91US 9,643,720 B22017
- Gas turbine engine85US 4,809,498 AGeneral Electric Company · 1989