B64C 21/00
Influencing air flow over aircraft surfaces by affecting boundary layer flow
B64C21/00 (Influencing air flow over aircraft surfaces by affecting boundary layer flow) appears on 1,049 US grants and 1,011 published applications in this corpus.
Search patents in B64C- Granted patents
- 1,049
- Published applications
- 1,011
- Assignees
- 314
- Inventors
- 1,712
- Latest grant
- 15 Sep 2026
Filings by year
| Year | Granted patents | Published applications |
|---|---|---|
| 1976 | 3 | 0 |
| 1977 | 3 | 0 |
| 1978 | 5 | 0 |
| 1979 | 4 | 0 |
| 1980 | 7 | 0 |
| 1981 | 4 | 0 |
| 1982 | 4 | 0 |
| 1983 | 4 | 0 |
| 1984 | 4 | 0 |
| 1985 | 5 | 0 |
| 1986 | 5 | 0 |
| 1987 | 12 | 0 |
| 1988 | 11 | 0 |
| 1989 | 10 | 0 |
| 1990 | 9 | 0 |
| 1991 | 10 | 0 |
| 1992 | 15 | 0 |
| 1993 | 10 | 0 |
| 1994 | 9 | 0 |
| 1995 | 5 | 0 |
| 1996 | 9 | 0 |
| 1997 | 4 | 0 |
| 1998 | 18 | 0 |
| 1999 | 17 | 0 |
| 2000 | 13 | 0 |
| 2001 | 10 | 1 |
| 2002 | 14 | 6 |
| 2003 | 7 | 7 |
| 2004 | 8 | 15 |
| 2005 | 9 | 17 |
| 2006 | 12 | 16 |
| 2007 | 10 | 17 |
| 2008 | 5 | 18 |
| 2009 | 9 | 26 |
| 2010 | 15 | 39 |
| 2011 | 17 | 22 |
| 2012 | 24 | 27 |
| 2013 | 26 | 37 |
| 2014 | 32 | 29 |
| 2015 | 32 | 29 |
| 2016 | 30 | 65 |
| 2017 | 47 | 83 |
| 2018 | 46 | 83 |
| 2019 | 63 | 73 |
| 2020 | 77 | 104 |
| 2021 | 74 | 67 |
| 2022 | 83 | 59 |
| 2023 | 50 | 60 |
| 2024 | 67 | 45 |
| 2025 | 50 | 38 |
| 2026 | 32 | 28 |
By publication year. Applications have been published since 2001. 2026 runs to 8 Oct.
Subgroups
Granted patents
Recent patents
- Fan apparatus with lift fan and louvered cover15 Sep 2026US 12,735,179 B2Aurora Flight Sciences Corporation
- Exhaust area and flow turning control1 Sep 2026US 12,722,777 B2Whisper Aero Inc.
- Engine nacelle inlet having a roughened turbulator surface1 Sep 2026US 12,722,792 B2The Boeing Company
- Offset drag reduction device1 Sep 2026US 12,722,813 B2Wing Aviation LLC
- Rotorcraft with powerplant exhaust sound attenuation25 Aug 2026US 12,715,576 B2Pratt & Whitney Canada Corp.
- Laser processing device having an optical arrangement which comprises a beam splitter24 Sep 2026US 2026/0284784 A14Jet Microtech GmbH
- Blended wing aircraft17 Sep 2026US 2026/0274413 A1General Electric Company
- Low Drag Heat Exchanger17 Sep 2026US 2026/0274430 A1Textron Aviation Inc.
- Industrial aerial robot systems and methods20 Aug 2026US 2026/0242078 A1
- Industrial aerial robot systems and methods20 Aug 2026US 2026/0242079 A1
Most cited
By later US patents
- Electrostatic/pneumatic actuators for active surfaces213US 6,215,221 B1Honeywell International Inc. · 2001
- Synthetic jet actuator and applications thereof162US 5,758,823 AGeorgia Tech Research Corporation · 1998
- Reduction of turbomachinery noise149US 6,004,095 AMassachusetts Institute of Technology · 1999
- Drag reduction article137US 5,133,516 AMinnesota Mining and Manufacturing Company · 1992
- Synthetic jet actuators for cooling heated bodies and environments132US 6,123,145 AGeorgia Tech Research Corporation · 2000