B64C 2230/22
Boundary layer controls: by using a surface having multiple apertures of relatively
Official title: by using a surface having multiple apertures of relatively small openings other than slots
B64C2230/22 (Boundary layer controls: by using a surface having multiple apertures of relatively) appears on 137 US grants and 92 published applications in this corpus.
Search patents in B64C- Granted patents
- 137
- Published applications
- 92
- Assignees
- 60
- Inventors
- 224
- Latest grant
- 28 Apr 2026
Filings by year
| Year | Granted patents | Published applications |
|---|---|---|
| 1985 | 2 | 0 |
| 1986 | 2 | 0 |
| 1987 | 1 | 0 |
| 1988 | 2 | 0 |
| 1989 | 3 | 0 |
| 1990 | 0 | 0 |
| 1991 | 1 | 0 |
| 1992 | 2 | 0 |
| 1993 | 1 | 0 |
| 1994 | 4 | 0 |
| 1995 | 0 | 0 |
| 1996 | 0 | 0 |
| 1997 | 2 | 0 |
| 1998 | 11 | 0 |
| 1999 | 6 | 0 |
| 2000 | 6 | 0 |
| 2001 | 3 | 0 |
| 2002 | 2 | 2 |
| 2003 | 4 | 3 |
| 2004 | 3 | 1 |
| 2005 | 1 | 3 |
| 2006 | 1 | 0 |
| 2007 | 1 | 2 |
| 2008 | 0 | 1 |
| 2009 | 0 | 3 |
| 2010 | 2 | 6 |
| 2011 | 2 | 1 |
| 2012 | 3 | 3 |
| 2013 | 2 | 1 |
| 2014 | 7 | 3 |
| 2015 | 1 | 6 |
| 2016 | 6 | 9 |
| 2017 | 4 | 9 |
| 2018 | 5 | 3 |
| 2019 | 9 | 12 |
| 2020 | 7 | 11 |
| 2021 | 7 | 2 |
| 2022 | 9 | 8 |
| 2023 | 8 | 3 |
| 2024 | 5 | 0 |
| 2025 | 0 | 0 |
| 2026 | 2 | 0 |
By publication year. Applications have been published since 2001. 2026 runs to 8 Oct.
Recent patents
- Apparatus of vortex generator and spoiler28 Apr 2026US 12,612,155 B1
- Boat propulsion system17 Feb 2026US 12,552,504 B2Bound 4 Blue, S.L.
- Movable aerodynamic surface for an aircraft10 Dec 2024US 12,162,584 B2Airbus Operations GmbH
- Delivery container for drone3 Dec 2024US 12,157,620 B2The Yokohama Rubber Co., Ltd.
- Active drag control system for an aircraft29 Oct 2024US 12,129,018 B2Airbus Operations GmbH
- Aircraft noise control29 Jun 2023US 2023/0202642 A1The De Havilland Aircraft of Canada, Limited
- Boat propulsion system8 Jun 2023US 2023/0174209 A1Bound 4 Blue, S.L.
- Delivery container for drone2 Mar 2023US 2023/0066388 A1The Yokohama Rubber Co., Ltd.
- Variable-porosity panel systems and associated methods3 Nov 2022US 2022/0349391 A1The Boeing Company
- Movable aerodynamic surface for an aircraft29 Sep 2022US 2022/0306273 A1Airbus Operations GmbH
Most cited
By later US patents
- Composite laminate86US 5,806,796 ABritish Aerospace Public Limited Company · 1998
- Active blowing system for rotorcraft vortex interaction noise reduction78US 5,813,625 AMcDonnell Douglas Helicopter Company · 1998
- Combined acoustic and anti-ice engine inlet liner78US 5,841,079 ANorthrop Grumman Corporation · 1998
- Turbofan duct with noise suppression and boundary layer control73US 4,749,150 ARohr Industries, Inc. · 1988
- Vehicular boundary layer control system and method70US 6,068,328 A2000