Carbon-doped membranes, methods of making same, and uses thereof
US-2025303368-A1 · Oct 2, 2025 · US
by anodic oxidation
by anodic oxidation · 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 | B01D67/0065 |
| Official title | {by anodic oxidation} |
| Display label | by anodic oxidation |
| Total patents | 33 |
Filing trend
Year-over-year patent counts classified under this CPC code.
Filing activity over the last five years is declining.
| Year | Patents |
|---|---|
| 2015 | 1 |
| 2016 | 3 |
| 2017 | 4 |
| 2018 | 3 |
| 2019 | 2 |
| 2020 | 5 |
| 2021 | 6 |
| 2022 | 1 |
| 2023 | 2 |
| 2024 | 2 |
| 2025 | 4 |
Representative patents
Representative publications under this CPC code from precomputed stats, or recent filings when stats are unavailable.
Particle capture filtration membrane, method for manufacturing the same, and method for measuring particle count
US-2025256246-A1 · Aug 14, 2025 · US
Apparatus for manufacturing semiconductor device, semiconductor device manufacturing system, and filter device
US-2025178153-A1 · Jun 5, 2025 · US
Filter apparatus for semiconductor device fabrication process
US-12251786-B2 · Mar 18, 2025 · US
Porous medium with adjustable fluid permeability and associated systems and methods
US-2024082781-A1 · Mar 14, 2024 · US
Porous medium with adjustable fluid permeability and associated systems and methods
US-11872525-B2 · Jan 16, 2024 · US
Porous substrate structure and manufacturing method thereof
US-11583810-B2 · Feb 21, 2023 · US
Device for producing energy by salinity gradient through titanium oxide nanofluid membranes
US-11571659-B2 · Feb 7, 2023 · US
Porous substrate structure and manufacturing method thereof
US-2022184561-A1 · Jun 16, 2022 · US
Filter apparatus for semiconductor device fabrication process
US-2021362291-A1 · Nov 25, 2021 · US
Porous medium with adjustable fluid permeability and associated systems and methods
US-2021299608-A1 · Sep 30, 2021 · US
Device for Producing Energy by Salinity Gradient Through Titanium Oxide Nanofluid Membranes
US-2021178326-A1 · Jun 17, 2021 · US
Microfabrication of a microdialysis probe with nanoporous membrane
US-11014047-B2 · May 25, 2021 · US
Device for producing energy by salinity gradient through titanium oxide nanofluid membranes
US-10960354-B2 · Mar 30, 2021 · US
Method for preparing invisible anodic aluminum oxide pattern
US-10947634-B2 · Mar 16, 2021 · US
Control of composite covalent organic framework by varying functional groups inside the pore
US-2020398222-A1 · Dec 24, 2020 · US
Hybrid type filtration structure for filtering liquid
US-10717052-B2 · Jul 21, 2020 · US
Filtering article containing titania nanotubes
US-10702833-B2 · Jul 7, 2020 · US
Method for preparing invisible anodic aluminum oxide pattern
US-2020131659-A1 · Apr 30, 2020 · US
Fluid permeable anodic oxide film and fluid permeable body using anodic oxide film
US-10533253-B2 · Jan 14, 2020 · US
Frequently asked questions
Answers are generated from the same data shown on this page.
- What is CPC B01D67/0065?
- CPC B01D67/0065 is the Cooperative Patent Classification code for “by anodic oxidation.”
- How many patents are filed under CPC B01D67/0065 (by anodic oxidation)?
- Our database includes 33 publications tagged with this CPC code.
- Is patent activity under CPC B01D67/0065 growing?
- Publication counts under this code: 2 in 2024 vs 4 in 2025 (latest complete years).