Epoxy functionalized poly(aryl ether sulfones) copolymers
US-12384887-B2 · Aug 12, 2025 · US
Epoxy resins
Epoxy resins · 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 | B01D71/46 |
| Official title | Epoxy resins |
| Display label | Epoxy resins |
| Total patents | 43 |
Filing trend
Year-over-year patent counts classified under this CPC code.
Filing activity over the last five years is rapidly declining.
| Year | Patents |
|---|---|
| 2015 | 6 |
| 2016 | 7 |
| 2017 | 3 |
| 2018 | 9 |
| 2019 | 3 |
| 2020 | 3 |
| 2021 | 4 |
| 2022 | 2 |
| 2023 | 3 |
| 2024 | 2 |
| 2025 | 1 |
Representative patents
Representative publications under this CPC code from precomputed stats, or recent filings when stats are unavailable.
Membrane with reacted networks
US-2024367114-A1 · Nov 7, 2024 · US
Tetrablock copolymers and articles made therefrom
US-2024226820-A1 · Jul 11, 2024 · US
Hollow porous fibers
US-11767615-B2 · Sep 26, 2023 · US
Ion-sensitive substance, ion-sensitive membrane using the same, and method for producing the ion-sensitive substance
US-11745145-B2 · Sep 5, 2023 · US
Epoxy functionalized poly(aryl ether sulfones) copolymers
US-2023092316-A1 · Mar 23, 2023 · US
Hollow fiber membrane module and production method therefor, and epoxy resin used in hollow fiber membrane and production method
US-11478753-B2 · Oct 25, 2022 · US
Hollow Porous Fibers
US-2022002911-A1 · Jan 6, 2022 · US
Hollow porous fibers
US-11186927-B2 · Nov 30, 2021 · US
Ion-sensitive substance, ion-sensitive membrane using the same, and method for producing the ion-sensitive substance
US-2021362096-A1 · Nov 25, 2021 · US
Porous polyolefin fibers
US-11001944-B2 · May 11, 2021 · US
Method of production of nanoporous membranes for water purification from metal ions at low differential pressures
US-10906010-B2 · Feb 2, 2021 · US
Polymeric ionomer separation membranes and methods of use
US-2020368690-A1 · Nov 26, 2020 · US
Asymmetric composite membranes and uses thereof
US-2020261855-A1 · Aug 20, 2020 · US
Polymeric ionomer separation membranes and methods of use
US-10618008-B2 · Apr 14, 2020 · US
Method of making improved polyimide separation membranes
US-2019247806-A1 · Aug 15, 2019 · US
Hollow fiber membrane module and production method therefor, and epoxy resin used in hollow fiber membrane and production method
US-2019151801-A1 · May 23, 2019 · US
Absorbent article containing a nonwoven web formed from a porous polyolefin fibers
US-10240260-B2 · Mar 26, 2019 · US
A polyvinyl alcohol porous support and method
US-2018326360-A1 · Nov 15, 2018 · US
Polyamide-based water-treatment separation membrane having excellent durability, and manufacturing method therefor
US-10112154-B2 · Oct 30, 2018 · US
Frequently asked questions
Answers are generated from the same data shown on this page.
- What is CPC B01D71/46?
- CPC B01D71/46 is the Cooperative Patent Classification code for “Epoxy resins.”
- How many patents are filed under CPC B01D71/46 (Epoxy resins)?
- Our database includes 43 publications tagged with this CPC code.
- Is patent activity under CPC B01D71/46 growing?
- Publication counts under this code: 2 in 2024 vs 1 in 2025 (latest complete years).