B64C 27/04
Helicopters
B64C27/04 (Helicopters) appears on 2,326 US grants and 2,480 published applications in this corpus.
Search patents in B64C- Granted patents
- 2,326
- Published applications
- 2,480
- Assignees
- 500
- Inventors
- 3,296
- Latest grant
- 6 Oct 2026
Filings by year
| Year | Granted patents | Published applications |
|---|---|---|
| 1976 | 8 | 0 |
| 1977 | 5 | 0 |
| 1978 | 1 | 0 |
| 1979 | 5 | 0 |
| 1980 | 6 | 0 |
| 1981 | 6 | 0 |
| 1982 | 0 | 0 |
| 1983 | 4 | 0 |
| 1984 | 10 | 0 |
| 1985 | 8 | 0 |
| 1986 | 8 | 0 |
| 1987 | 9 | 0 |
| 1988 | 7 | 0 |
| 1989 | 8 | 0 |
| 1990 | 8 | 0 |
| 1991 | 7 | 0 |
| 1992 | 9 | 0 |
| 1993 | 7 | 0 |
| 1994 | 4 | 0 |
| 1995 | 10 | 0 |
| 1996 | 5 | 0 |
| 1997 | 3 | 0 |
| 1998 | 11 | 0 |
| 1999 | 11 | 0 |
| 2000 | 17 | 0 |
| 2001 | 10 | 2 |
| 2002 | 15 | 13 |
| 2003 | 7 | 10 |
| 2004 | 11 | 19 |
| 2005 | 10 | 28 |
| 2006 | 17 | 23 |
| 2007 | 19 | 25 |
| 2008 | 9 | 27 |
| 2009 | 25 | 42 |
| 2010 | 23 | 46 |
| 2011 | 35 | 41 |
| 2012 | 23 | 51 |
| 2013 | 47 | 65 |
| 2014 | 63 | 84 |
| 2015 | 94 | 103 |
| 2016 | 90 | 131 |
| 2017 | 111 | 233 |
| 2018 | 131 | 231 |
| 2019 | 178 | 198 |
| 2020 | 225 | 233 |
| 2021 | 189 | 195 |
| 2022 | 170 | 177 |
| 2023 | 209 | 160 |
| 2024 | 186 | 165 |
| 2025 | 171 | 104 |
| 2026 | 81 | 74 |
By publication year. Applications have been published since 2001. 2026 runs to 8 Oct.
Subgroups
Granted patents
Recent patents
- Active crew seat vibration control6 Oct 2026US 12,753,823 B2Lockheed Martin Corporation
- Automated and user assisted autorotation for air vehicle6 Oct 2026US 12,754,570 B2Skyryse, Inc.
- Decoupled hand controls for aircraft with vertical takeoff and landing and forward flight capabilities15 Sep 2026US 12,735,172 B2Kitty Hawk Corporation
- Helicopter15 Sep 2026US 12,735,177 B2Tusas- Turk Havacilik Ve Uzay Sanayii Anonim Sirketi
- Panel systems and methods for helicopters8 Sep 2026US 12,728,978 B2North West Heli-Structures Incorporated
- Decoupled hand controls for aircraft with vertical takeoff and landing and forward flight capabilities8 Oct 2026US 2026/0307783 A1Kitty Hawk Corporation
- Drive shaft with non-cylindrical shape8 Oct 2026US 2026/0309183 A1Hamilton Sundstrand Corporation
- Centrifugal Force Enabled Clutch and Aircraft8 Oct 2026US 2026/0309196 A1Lockheed Martin Corporation
- System, assemblies and methods for mechanical-thrust power conversion multifans1 Oct 2026US 2026/0296640 A1N.M.B. Medical Applications Ltd
- Rotorcraft with a skid-type landing gear or a wheel-type landing gear24 Sep 2026US 2026/0285479 A1Airbus Helicopters Deutschland GmbH
Most cited
By later US patents
- Helicopter power plant control158US 3,963,372 AGeneral Motors Corporation · 1976
- Modular flying vehicle133US 8,453,962 B22013
- Modular and morphable air vehicle125US 9,045,226 B2Piasecki Aircraft Corporation · 2015
- Electricity generation in automated aerial vehicles124US 9,550,577 B1Amazon Technologies, Inc. · 2017
- Aerodynamically stable, VTOL aircraft112US 7,249,732 B2Ufoz, LLC · 2007