Membrane separation device, membrane separation system, and method for operating membrane separation device
US-2025387759-A1 · Dec 25, 2025 · US
characterised by the tube diameter
characterised by the tube diameter · 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 | B01D69/043 |
| Official title | {characterised by the tube diameter} |
| Display label | characterised by the tube diameter |
| Total patents | 40 |
Filing trend
Year-over-year patent counts classified under this CPC code.
Filing activity over the last five years is growing.
| Year | Patents |
|---|---|
| 2015 | 1 |
| 2017 | 2 |
| 2018 | 3 |
| 2019 | 5 |
| 2020 | 8 |
| 2021 | 3 |
| 2022 | 4 |
| 2023 | 5 |
| 2024 | 5 |
| 2025 | 4 |
Representative patents
Representative publications under this CPC code from precomputed stats, or recent filings when stats are unavailable.
Sintered porous body with multiple layers
US-12409421-B2 · Sep 9, 2025 · US
Penta-amine-impregnated ultrafiltration support matrix for rapid fabrication of a hyper-cross-linked polyamide membrane
US-2025073645-A1 · Mar 6, 2025 · US
Cross-flow membrane filtration channel
US-2025010244-A1 · Jan 9, 2025 · US
Method of forming a Pd—Au alloy layer on a substrate
US-12168199-B2 · Dec 17, 2024 · US
Concentration method for analysis solution using forward osmosis membrane, and analysis method
US-2024325977-A1 · Oct 3, 2024 · US
Desalination method of ion micro-nano sieving for agricultural water
US-2024317611-A1 · Sep 26, 2024 · US
Cross-flow membrane filtration channel
US-12097469-B2 · Sep 24, 2024 · US
Mixed gas separation method and mixed gas separation apparatus
US-2024100474-A1 · Mar 28, 2024 · US
Microporous articles and corresponding formation methods
US-2023416486-A1 · Dec 28, 2023 · US
Tangential flow depth filtration systems and methods of filtration using same
US-11643629-B2 · May 9, 2023 · US
Tangential flow depth filtration systems and methods of filtration using same
US-11643628-B2 · May 9, 2023 · US
Base material, for membrane filter and method for producing same
US-11571666-B2 · Feb 7, 2023 · US
Composition and method for manufacturing sulfone polymer membrane
US-11565217-B2 · Jan 31, 2023 · US
Sintered porous body with multiple layers
US-2022410079-A1 · Dec 29, 2022 · US
Method of forming a pd-au alloy layer on a substrate
US-2022403541-A1 · Dec 22, 2022 · US
Tangential flow depth filtration systems and methods of filtration using same
US-2022228098-A1 · Jul 21, 2022 · US
Very thin tube made from TPU and its production process
US-11285651-B2 · Mar 29, 2022 · US
Tangential flow depth filtration systems and methods of filtration using same
US-2021214669-A1 · Jul 15, 2021 · US
Tangential flow depth filtration systems and methods of filtration using same
US-11021683-B2 · Jun 1, 2021 · US
Frequently asked questions
Answers are generated from the same data shown on this page.
- What is CPC B01D69/043?
- CPC B01D69/043 is the Cooperative Patent Classification code for “characterised by the tube diameter.”
- How many patents are filed under CPC B01D69/043 (characterised by the tube diameter)?
- Our database includes 40 publications tagged with this CPC code.
- Is patent activity under CPC B01D69/043 growing?
- Publication counts under this code: 5 in 2024 vs 4 in 2025 (latest complete years).