Fluid entrapment via perforated surfaces for drag reduction
US-12459603-B2 · Nov 4, 2025 · US
by reducing surface friction
by reducing surface friction · Cooperative Patent Classification (CPC)
Separating, mixing, shaping, printing, and transporting materials.
Related technology areas
Mapped technology topics for this CPC code.
| Metric | Value |
|---|---|
| CPC code | B63B1/34 |
| Official title | by reducing surface friction |
| Display label | by reducing surface friction |
| Total patents | 27 |
Filing trend
Year-over-year patent counts classified under this CPC code.
Filing activity over the last five years is rapidly declining.
| Year | Patents |
|---|---|
| 2016 | 4 |
| 2017 | 3 |
| 2018 | 4 |
| 2019 | 5 |
| 2020 | 1 |
| 2021 | 3 |
| 2022 | 3 |
| 2023 | 1 |
| 2024 | 2 |
| 2025 | 1 |
Representative patents
Representative publications under this CPC code from precomputed stats, or recent filings when stats are unavailable.
Submerged periodic riblets
US-12085102-B2 · Sep 10, 2024 · US
Resilient and scalable microtextured coatings for quiet and efficient urban air mobility
US-2024150008-A1 · May 9, 2024 · US
Maritime vehicle with surface array of transducers controlling drag
US-11794881-B2 · Oct 24, 2023 · US
Vortex control on engine nacelle strake and other vortex generators
US-2022411046-A1 · Dec 29, 2022 · US
Vehicle with Surface Array of Transducers Controlling Drag
US-2022371725-A1 · Nov 24, 2022 · US
Vehicle with surface array of transducers controlling drag
US-11453482-B2 · Sep 27, 2022 · US
Vehicle with Surface Array of Transducers Controlling Drag
US-2021387719-A1 · Dec 16, 2021 · US
Submerged periodic riblets
US-2021231142-A1 · Jul 29, 2021 · US
Hydrodynamic flow separation device for an axisymmetric bluff body
US-10899417-B1 · Jan 26, 2021 · US
Articulating moored profiler system
US-10611437-B2 · Apr 7, 2020 · US
Cavitator system for suppressing cavity buoyancy effect and method thereof
US-10486773-B2 · Nov 26, 2019 · US
Cavitator system for suppressing cavity buoyancy effect and method thereof
US-2019322335-A1 · Oct 24, 2019 · US
Compressor blade surface patterning
US-2019323356-A1 · Oct 24, 2019 · US
Solidifiable composition for preparaton of liquid-infused slippery surfaces and methods of applying
US-10385181-B2 · Aug 20, 2019 · US
Article in motion comprising hydrophobically-coated region
US-2019100282-A1 · Apr 4, 2019 · US
Articulating moored profiler system
US-2018297669-A1 · Oct 18, 2018 · US
Article with controllable wettability
US-10053190-B2 · Aug 21, 2018 · US
Polymer drag reduction systems on vehicle surfaces
US-10023267-B2 · Jul 17, 2018 · US
Actuatable microstructures and methods of making the same
US-9932481-B2 · Apr 3, 2018 · US
Frequently asked questions
Answers are generated from the same data shown on this page.
- What is CPC B63B1/34?
- CPC B63B1/34 is the Cooperative Patent Classification code for “by reducing surface friction.”
- How many patents are filed under CPC B63B1/34 (by reducing surface friction)?
- Our database includes 27 publications tagged with this CPC code.
- Is patent activity under CPC B63B1/34 growing?
- Publication counts under this code: 2 in 2024 vs 1 in 2025 (latest complete years).