B64C 27/32
Rotors
B64C27/32 (Rotors) appears on 2,067 US grants and 1,747 published applications in this corpus.
Search patents in B64C- Granted patents
- 2,067
- Published applications
- 1,747
- Assignees
- 460
- Inventors
- 2,695
- Latest grant
- 6 Oct 2026
Filings by year
| Year | Granted patents | Published applications |
|---|---|---|
| 1976 | 14 | 0 |
| 1977 | 15 | 0 |
| 1978 | 29 | 0 |
| 1979 | 17 | 0 |
| 1980 | 22 | 0 |
| 1981 | 39 | 0 |
| 1982 | 28 | 0 |
| 1983 | 18 | 0 |
| 1984 | 19 | 0 |
| 1985 | 25 | 0 |
| 1986 | 25 | 0 |
| 1987 | 29 | 0 |
| 1988 | 25 | 0 |
| 1989 | 19 | 0 |
| 1990 | 15 | 0 |
| 1991 | 11 | 0 |
| 1992 | 18 | 0 |
| 1993 | 24 | 0 |
| 1994 | 27 | 0 |
| 1995 | 13 | 0 |
| 1996 | 17 | 0 |
| 1997 | 9 | 0 |
| 1998 | 13 | 0 |
| 1999 | 19 | 0 |
| 2000 | 24 | 0 |
| 2001 | 27 | 4 |
| 2002 | 18 | 21 |
| 2003 | 16 | 15 |
| 2004 | 23 | 23 |
| 2005 | 16 | 27 |
| 2006 | 12 | 29 |
| 2007 | 24 | 26 |
| 2008 | 10 | 21 |
| 2009 | 21 | 33 |
| 2010 | 24 | 42 |
| 2011 | 24 | 25 |
| 2012 | 26 | 38 |
| 2013 | 26 | 55 |
| 2014 | 41 | 72 |
| 2015 | 74 | 82 |
| 2016 | 74 | 95 |
| 2017 | 74 | 164 |
| 2018 | 82 | 140 |
| 2019 | 151 | 163 |
| 2020 | 178 | 158 |
| 2021 | 131 | 123 |
| 2022 | 118 | 95 |
| 2023 | 109 | 94 |
| 2024 | 108 | 92 |
| 2025 | 93 | 64 |
| 2026 | 53 | 46 |
By publication year. Applications have been published since 2001. 2026 runs to 8 Oct.
Subgroups
Granted patents
Recent patents
- Method of stabilizing articulated rotor blade6 Oct 2026US 12,752,914 B2Lockheed Martin Corporation
- Helicopter rotor head structure15 Sep 2026US 12,735,178 B2Tibet Chuangbo General Aviation Technology Co., Ltd.
- Distributed propulsion system for vertical take off and landing closed wing aircraft8 Sep 2026US 12,728,983 B2Textron Innovations Inc.
- Air vehicle8 Sep 2026US 12,728,990 B2Tusas- Turk Havacilik Ve Uzay Sanayii Anonim Sirketi
- Rotorcraft with a blade tip illumination system8 Sep 2026US 12,729,012 B2Airbus Helicopters Deutschland GmbH
- Systems and Methods for Manufacturing Composite Laminate Structures8 Oct 2026US 2026/0307787 A1
- Flying object1 Oct 2026US 2026/0296641 A1Honda Motor Co., Ltd.
- Hydrogen Powered Vertical Take-Off And Landing Aircraft24 Sep 2026US 2026/0285514 A1
- Controlled flight of a multicopter experiencing a failure affecting an effector17 Sep 2026US 2026/0274399 A1ETH Zurich
- Vertiport with conveyance platforms17 Sep 2026US 2026/0274405 A1Flyon Aerosystems Ltd.
Most cited
By later US patents
- Composite wind turbine rotor blade and method for making same155US 4,976,587 ADWR Wind Technologies Inc. · 1990
- Modular and morphable air vehicle125US 9,045,226 B2Piasecki Aircraft Corporation · 2015
- Erosion resistant surface protection106US 5,486,096 AUnited Technologies Corporation · 1996
- Honeycomb spliced multilayer foam core aircraft composite parts and method for making same88US 4,687,691 AUnited Technologies Corporation · 1987
- Rotor for a dual mode aircraft86US 8,376,264 B12013