B64C 2230/20
Boundary layer controls: by passively inducing fluid flow
Official title: by passively inducing fluid flow, e.g. by means of a pressure difference between both ends of a slot or duct
B64C2230/20 (Boundary layer controls: by passively inducing fluid flow) appears on 104 US grants and 85 published applications in this corpus.
Search patents in B64C- Granted patents
- 104
- Published applications
- 85
- Assignees
- 59
- Inventors
- 201
- Latest grant
- 19 May 2026
Filings by year
| Year | Granted patents | Published applications |
|---|---|---|
| 1976 | 2 | 0 |
| 1977 | 0 | 0 |
| 1978 | 1 | 0 |
| 1979 | 1 | 0 |
| 1980 | 1 | 0 |
| 1981 | 0 | 0 |
| 1982 | 0 | 0 |
| 1983 | 3 | 0 |
| 1984 | 1 | 0 |
| 1985 | 2 | 0 |
| 1986 | 1 | 0 |
| 1987 | 2 | 0 |
| 1988 | 2 | 0 |
| 1989 | 2 | 0 |
| 1990 | 1 | 0 |
| 1991 | 2 | 0 |
| 1992 | 1 | 0 |
| 1993 | 0 | 0 |
| 1994 | 2 | 0 |
| 1995 | 1 | 0 |
| 1996 | 2 | 0 |
| 1997 | 0 | 0 |
| 1998 | 5 | 0 |
| 1999 | 3 | 0 |
| 2000 | 2 | 0 |
| 2001 | 2 | 1 |
| 2002 | 3 | 1 |
| 2003 | 2 | 4 |
| 2004 | 1 | 2 |
| 2005 | 1 | 3 |
| 2006 | 2 | 0 |
| 2007 | 1 | 0 |
| 2008 | 0 | 2 |
| 2009 | 1 | 3 |
| 2010 | 1 | 2 |
| 2011 | 1 | 1 |
| 2012 | 1 | 1 |
| 2013 | 1 | 7 |
| 2014 | 0 | 0 |
| 2015 | 2 | 3 |
| 2016 | 5 | 6 |
| 2017 | 2 | 4 |
| 2018 | 2 | 9 |
| 2019 | 5 | 8 |
| 2020 | 5 | 7 |
| 2021 | 9 | 6 |
| 2022 | 5 | 3 |
| 2023 | 5 | 5 |
| 2024 | 6 | 4 |
| 2025 | 1 | 2 |
| 2026 | 3 | 1 |
By publication year. Applications have been published since 2001. 2026 runs to 8 Oct.
Recent patents
- Aircraft structure having an improved inlet opening for engine air19 May 2026US 12,630,287 B2Airbus Defence and Space GmbH
- Apparatus of vortex generator and spoiler28 Apr 2026US 12,612,155 B1
- Methods for optimizing boundary layer control (BLC) systems and related systems10 Mar 2026US 12,570,394 B2
- Aircraft airframe component with air system23 Sep 2025US 12,420,914 B2Rtx Corporation
- Flying body15 Oct 2024US 12,116,129 B2SoftBank Corp.
- Methods for optimizing boundary layer control (blc) systems and related systems25 Jun 2026US 2026/0175969 A1
- Aircraft structure having an improved inlet opening for engine air14 Aug 2025US 2025/0257688 A1Airbus Defence and Space GmbH
- Aircraft airframe component with air system3 Jul 2025US 2025/0214698 A1Rtx Corporation
- Flow control ducted fans25 Jul 2024US 2024/0246661 A1The Boeing Company
- Engine strut flow control4 Jul 2024US 2024/0218809 A1Pratt & Whitney Canada Corp.
Most cited
By later US patents
- Aerodynamic low drag structure65US 5,743,488 AShort Brothers PLC · 1998
- Slotted aircraft wing58US 7,048,228 B2The Boeing Company · 2006
- Flow control device to eliminate cavity resonance54US 6,050,527 AThe Boeing Company · 2000
- Apparatus for reducing turbulent drag52US 4,736,912 AMesserschmitt-Boelkow-Blohm GmbH · 1988
- Laminar flow control airfoil46US 4,813,631 AThe Boeing Company · 1989