B64C 2230/00
Boundary layer controls
B64C2230/00 (Boundary layer controls) appears on 944 US grants and 865 published applications in this corpus.
Search patents in B64C- Granted patents
- 944
- Published applications
- 865
- Assignees
- 296
- Inventors
- 1,534
- Latest grant
- 11 Aug 2026
Filings by year
| Year | Granted patents | Published applications |
|---|---|---|
| 1976 | 5 | 0 |
| 1977 | 0 | 0 |
| 1978 | 3 | 0 |
| 1979 | 4 | 0 |
| 1980 | 2 | 0 |
| 1981 | 1 | 0 |
| 1982 | 1 | 0 |
| 1983 | 7 | 0 |
| 1984 | 6 | 0 |
| 1985 | 4 | 0 |
| 1986 | 4 | 0 |
| 1987 | 12 | 0 |
| 1988 | 10 | 0 |
| 1989 | 9 | 0 |
| 1990 | 8 | 0 |
| 1991 | 13 | 0 |
| 1992 | 10 | 0 |
| 1993 | 10 | 0 |
| 1994 | 10 | 0 |
| 1995 | 6 | 0 |
| 1996 | 4 | 0 |
| 1997 | 6 | 0 |
| 1998 | 22 | 0 |
| 1999 | 24 | 0 |
| 2000 | 20 | 0 |
| 2001 | 11 | 1 |
| 2002 | 15 | 8 |
| 2003 | 8 | 6 |
| 2004 | 11 | 17 |
| 2005 | 8 | 12 |
| 2006 | 11 | 22 |
| 2007 | 10 | 19 |
| 2008 | 7 | 18 |
| 2009 | 9 | 25 |
| 2010 | 18 | 46 |
| 2011 | 20 | 27 |
| 2012 | 28 | 35 |
| 2013 | 25 | 39 |
| 2014 | 36 | 29 |
| 2015 | 28 | 27 |
| 2016 | 37 | 59 |
| 2017 | 51 | 74 |
| 2018 | 43 | 77 |
| 2019 | 58 | 74 |
| 2020 | 64 | 73 |
| 2021 | 73 | 43 |
| 2022 | 58 | 42 |
| 2023 | 34 | 34 |
| 2024 | 37 | 25 |
| 2025 | 28 | 18 |
| 2026 | 15 | 15 |
By publication year. Applications have been published since 2001. 2026 runs to 8 Oct.
Subgroups
Granted patents
- B64C 2230/04Boundary layer controls: by actively generating fluid flowIndexing code361
- B64C 2230/06Boundary layer controls: by explicitly adjusting fluid flowIndexing code264
- B64C 2230/22Boundary layer controls: by using a surface having multiple apertures of relativelyIndexing code137
- B64C 2230/26Boundary layer controls: by using rib lets or hydrophobic surfacesIndexing code135
- B64C 2230/14Achieving noise reductionsIndexing code119
- B64C 2230/12Boundary layer controls: by using electromagnetic tiles, fluid ionizers, static charges orIndexing code116
- B64C 2230/20Boundary layer controls: by passively inducing fluid flowIndexing code104
- B64C 2230/28At propeller or rotor bladesIndexing code98
All 14 subgroupsShow fewer
- B64C 2230/16Boundary layer controls: by blowing other fluids over the surface than airIndexing code95
- B64C 2230/18Boundary layer controls: by using small jets that make the fluid flowIndexing code95
- B64C 2230/02Boundary layer controls: by using acoustic waves generated by transducersIndexing code70
- B64C 2230/08Boundary layer controls: by influencing fluid flow by means of surface cavitiesIndexing code42
- B64C 2230/24Boundary layer controls: by using passive resonance cavitiesIndexing code23
- B64C 2230/10Boundary layer controls: by influencing fluid flow by heating using other meansIndexing code12
Recent patents
- Cavity acoustic tones suppression11 Aug 2026US 12,703,480 B2BAE SYSTEMS plc
- Fluidic propulsive system and thrust and lift generator for aerial vehicles4 Aug 2026US 12,698,089 B2Jetoptera, Inc.
- Laser processing device having an optical arrangement which comprises a beam splitter9 Jun 2026US 12,649,200 B24Jetmicrotechgmbh
- 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
- Laser processing device having an optical arrangement which comprises a beam splitter24 Sep 2026US 2026/0284784 A14Jet Microtech GmbH
- An arc reaction engine and method of use20 Aug 2026US 2026/0243170 A1Ace Vtol Pty Ltd
- Wake Filling for Propeller Noise Reduction13 Aug 2026US 2026/0233829 A1Textron Aviation Inc.
- Propellers23 Jul 2026US 2026/0208854 A1OnwardAir, Inc.
- Open Rotor Propulsion System with Acoustic Treatment16 Jul 2026US 2026/0200586 A1Rtx Corporation
Most cited
By later US patents
- 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
- Aircraft gas turbine engine bleed air energy recovery apparatus119US 5,137,230 AGeneral Electric Company · 1992