B64C 27/473
Constructional features
B64C27/473 (Constructional features) appears on 950 US grants and 899 published applications in this corpus.
Search patents in B64C- Granted patents
- 950
- Published applications
- 899
- Assignees
- 258
- Inventors
- 1,481
- Latest grant
- 6 Oct 2026
Filings by year
| Year | Granted patents | Published applications |
|---|---|---|
| 1976 | 7 | 0 |
| 1977 | 8 | 0 |
| 1978 | 11 | 0 |
| 1979 | 6 | 0 |
| 1980 | 4 | 0 |
| 1981 | 12 | 0 |
| 1982 | 8 | 0 |
| 1983 | 7 | 0 |
| 1984 | 5 | 0 |
| 1985 | 7 | 0 |
| 1986 | 9 | 0 |
| 1987 | 10 | 0 |
| 1988 | 5 | 0 |
| 1989 | 4 | 0 |
| 1990 | 5 | 0 |
| 1991 | 6 | 0 |
| 1992 | 0 | 0 |
| 1993 | 9 | 0 |
| 1994 | 4 | 0 |
| 1995 | 8 | 0 |
| 1996 | 7 | 0 |
| 1997 | 3 | 0 |
| 1998 | 2 | 0 |
| 1999 | 5 | 0 |
| 2000 | 8 | 0 |
| 2001 | 9 | 2 |
| 2002 | 8 | 15 |
| 2003 | 8 | 1 |
| 2004 | 9 | 11 |
| 2005 | 4 | 10 |
| 2006 | 6 | 12 |
| 2007 | 11 | 11 |
| 2008 | 2 | 10 |
| 2009 | 11 | 12 |
| 2010 | 15 | 16 |
| 2011 | 6 | 4 |
| 2012 | 5 | 24 |
| 2013 | 9 | 29 |
| 2014 | 25 | 32 |
| 2015 | 31 | 35 |
| 2016 | 37 | 47 |
| 2017 | 39 | 113 |
| 2018 | 35 | 77 |
| 2019 | 81 | 93 |
| 2020 | 127 | 77 |
| 2021 | 63 | 63 |
| 2022 | 63 | 42 |
| 2023 | 55 | 45 |
| 2024 | 50 | 51 |
| 2025 | 51 | 40 |
| 2026 | 30 | 27 |
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.
- Multicopter with self-adjusting rotors8 Sep 2026US 12,730,452 B2Kitty Hawk Corporation
- Distributed propulsion system for vertical take off and landing closed wing aircraft23 Jun 2026US 12,662,237 B2Textron Innovations Inc.
- Systems and Methods for Manufacturing Composite Laminate Structures8 Oct 2026US 2026/0307787 A1
- Vertiport with conveyance platforms17 Sep 2026US 2026/0274405 A1Flyon Aerosystems Ltd.
- Pivoting aircraft rotor assemblies17 Sep 2026US 2026/0274406 A1Textron Systems Corporation
- Pure electric aircraft and control method therefor3 Sep 2026US 2026/0257792 A1Guangdong Huitian Aerospace Technology Co., Ltd.
- Vertical take-off and landing aircraft3 Sep 2026US 2026/0257806 A1
Most cited
By later US patents
- Composite wind turbine rotor blade and method for making same155US 4,976,587 ADWR Wind Technologies Inc. · 1990
- Honeycomb spliced multilayer foam core aircraft composite parts and method for making same88US 4,687,691 AUnited Technologies Corporation · 1987
- Method of manufacture of hollow pieces73US 3,967,996 A1976
- Large airfoil structure and method for its manufacture72US 4,732,542 AMesserschmitt-Bolkow-Blohm Gesellschaft mit beschranker Haftung · 1988
- Large airfoil structure and method for its manufacture71US 4,643,646 AMesserschmitt-Bolkow-Blohm GmbH · 1987