B64C 27/463
Blade tips
Official title: {Blade tips}
B64C27/463 (Blade tips) appears on 150 US grants and 126 published applications in this corpus.
Search patents in B64C- Granted patents
- 150
- Published applications
- 126
- Assignees
- 74
- Inventors
- 280
- Latest grant
- 8 Sep 2026
Filings by year
| Year | Granted patents | Published applications |
|---|---|---|
| 1977 | 2 | 0 |
| 1978 | 2 | 0 |
| 1979 | 3 | 0 |
| 1980 | 0 | 0 |
| 1981 | 1 | 0 |
| 1982 | 3 | 0 |
| 1983 | 0 | 0 |
| 1984 | 2 | 0 |
| 1985 | 0 | 0 |
| 1986 | 1 | 0 |
| 1987 | 0 | 0 |
| 1988 | 0 | 0 |
| 1989 | 1 | 0 |
| 1990 | 1 | 0 |
| 1991 | 1 | 0 |
| 1992 | 2 | 0 |
| 1993 | 3 | 0 |
| 1994 | 2 | 0 |
| 1995 | 0 | 0 |
| 1996 | 1 | 0 |
| 1997 | 0 | 0 |
| 1998 | 3 | 0 |
| 1999 | 5 | 0 |
| 2000 | 2 | 0 |
| 2001 | 5 | 1 |
| 2002 | 3 | 1 |
| 2003 | 0 | 0 |
| 2004 | 0 | 1 |
| 2005 | 1 | 5 |
| 2006 | 1 | 3 |
| 2007 | 3 | 3 |
| 2008 | 1 | 1 |
| 2009 | 3 | 5 |
| 2010 | 4 | 3 |
| 2011 | 2 | 4 |
| 2012 | 2 | 2 |
| 2013 | 1 | 3 |
| 2014 | 2 | 5 |
| 2015 | 2 | 2 |
| 2016 | 5 | 6 |
| 2017 | 3 | 11 |
| 2018 | 6 | 8 |
| 2019 | 10 | 11 |
| 2020 | 12 | 12 |
| 2021 | 9 | 17 |
| 2022 | 13 | 7 |
| 2023 | 9 | 3 |
| 2024 | 8 | 4 |
| 2025 | 8 | 6 |
| 2026 | 2 | 2 |
By publication year. Applications have been published since 2001. 2026 runs to 8 Oct.
Recent patents
- Rotorcraft with a blade tip illumination system8 Sep 2026US 12,729,012 B2Airbus Helicopters Deutschland GmbH
- Rotorcraft and rotor blade12 May 2026US 12,623,775 B2Exedy Corporation
- Tip end joint arrangement for a rotor blade with reconfigurable attributes for structural and aerodynamic tuning16 Dec 2025US 12,497,166 B2Lockheed Martin Corporation
- Wingtip shield18 Nov 2025US 12,473,079 B2
- Method and system for inverse-tapered high-speed rotors21 Oct 2025US 12,448,111 B1Textron Innovations Inc.
- Rotary Wing Blade of an Aircraft, and Aircraft Provided with such a Blade21 May 2026US 2026/0138737 A1Airbus Helicopters
- Aircraft with ducted propulsion14 May 2026US 2026/0131887 A1Texas Tech University System
- Method and System for Inverse-Tapered High-Speed Rotors23 Oct 2025US 2025/0326481 A1Textron Innovations Inc.
- Blade tip vortex control16 Oct 2025US 2025/0319960 A1
- Wingtip shield16 Oct 2025US 2025/0319961 A1
Most cited
By later US patents
- Aerofoil67US 5,992,793 AGKN Westland Helicopters Limited · 1999
- Lifting surface with active variable tip member and method for influencing lifting surface behavior therewith60US 6,394,397 B1The Boeing Company · 2002
- Blade with curved end for a rotary airfoil of an aircraft47US 4,880,355 AAerospatiale Societe Nationale Industrielle · 1989
- Blade with swept-back tip for the rotary wings of an aircraft47US 6,000,911 AEurocopter · 1999
- Helicopter rotor blade having a replaceable anhedral tip46US 5,320,494 AUnited Technologies Corporation · 1994