Electrospun polymeric nanofiber filter material and devices
US-2024278172-A1 · Aug 22, 2024 · US
using membranes
using membranes · 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 | B01D46/543 |
| Official title | {using membranes} |
| Display label | using membranes |
| Total patents | 238 |
Filing trend
Year-over-year patent counts classified under this CPC code.
Filing activity over the last five years is stable.
| Year | Patents |
|---|---|
| 2015 | 21 |
| 2016 | 14 |
| 2017 | 16 |
| 2018 | 11 |
| 2019 | 22 |
| 2020 | 26 |
| 2021 | 23 |
| 2022 | 26 |
| 2023 | 26 |
| 2024 | 25 |
| 2025 | 22 |
| 2026 | 6 |
Representative patents
Representative publications under this CPC code from precomputed stats, or recent filings when stats are unavailable.
Microgravity urine collection and storage
US-2018353020-A1 · Dec 13, 2018 · US
Air filter medium, air filter pack, and air filter unit
US-2018264392-A1 · Sep 20, 2018 · US
Pattern coated filter and method
US-2018111074-A1 · Apr 26, 2018 · US
Mixed powder and material for molding having ptfe as main component, and drawn porous body
US-2018065094-A1 · Mar 8, 2018 · US
Fuel tank inerting prefilter assemblies, devices, and methods of use
US-9908070-B2 · Mar 6, 2018 · US
Barrier vent assembly
US-2018021713-A1 · Jan 25, 2018 · US
Waved filter media and elements
US-2018015405-A1 · Jan 18, 2018 · US
Water-proof air-permeable filter and use of the same
US-9855530-B2 · Jan 2, 2018 · US
Process for the production of a structured film
US-9849629-B2 · Dec 26, 2017 · US
Gas Purifier
US-2017333841-A1 · Nov 23, 2017 · US
Pleated tank vent
US-2017304763-A1 · Oct 26, 2017 · US
Gas purification filter unit
US-9764268-B2 · Sep 19, 2017 · US
Point of use or point of dispense filter wiht multiple pleat packs
US-2017259216-A1 · Sep 14, 2017 · US
Modular filter capsule apparatus
US-9731233-B2 · Aug 15, 2017 · US
Fluoropolymer article for bacterial filtration
US-9731239-B2 · Aug 15, 2017 · US
Method for manufacturing laminate, and laminate
US-2017203559-A1 · Jul 20, 2017 · US
Composition having PTFE as main component, mixed powder, material for molding, filtering medium for filter, air filter unit, and a method for manufacturing a porous membrane
US-9707504-B2 · Jul 18, 2017 · US
Gas purifier
US-9694319-B2 · Jul 4, 2017 · US
Waved filter media and elements
US-9687771-B2 · Jun 27, 2017 · US
Frequently asked questions
Answers are generated from the same data shown on this page.
- What is CPC B01D46/543?
- CPC B01D46/543 is the Cooperative Patent Classification code for “using membranes.”
- How many patents are filed under CPC B01D46/543 (using membranes)?
- Our database includes 238 publications tagged with this CPC code.
- Is patent activity under CPC B01D46/543 growing?
- Publication counts under this code: 25 in 2024 vs 22 in 2025 (latest complete years).