Reverse osmosis membrane and method of producing the same
US-2024307831-A1 · Sep 19, 2024 · US
Heterogeneous membranes
Heterogeneous membranes · Cooperative Patent Classification (CPC)
Chemical and metallurgical processes, compounds, and materials.
Related technology areas
Mapped technology topics for this CPC code.
| Metric | Value |
|---|---|
| CPC code | C08J5/2275 |
| Official title | {Heterogeneous membranes} |
| Display label | Heterogeneous membranes |
| Total patents | 97 |
Filing trend
Year-over-year patent counts classified under this CPC code.
Filing activity over the last five years is declining.
| Year | Patents |
|---|---|
| 2015 | 10 |
| 2016 | 13 |
| 2017 | 15 |
| 2018 | 8 |
| 2019 | 8 |
| 2020 | 7 |
| 2021 | 9 |
| 2022 | 6 |
| 2023 | 5 |
| 2024 | 9 |
| 2025 | 5 |
| 2026 | 2 |
Representative patents
Representative publications under this CPC code from precomputed stats, or recent filings when stats are unavailable.
Polyolefin microporous membrane, production method thereof, separator for non-aqueous electrolyte secondary battery, and non-aqueous electrolyte secondary battery
US-10658640-B2 · May 19, 2020 · US
Voltage-controlled anion exchange membrane enabling selective ion affinities for water desalination and device containing the same
US-2020131058-A1 · Apr 30, 2020 · US
Release film, laminate and method for manufacturing same, and method for manufacturing fuel cell
US-10622658-B2 · Apr 14, 2020 · US
Ion exchanging membrane, method for manufacturing the same and energy storage system comprising the same
US-10559840-B2 · Feb 11, 2020 · US
Porous film, separator comprising same, and electrochemical cell
US-2020035972-A1 · Jan 30, 2020 · US
Ion exchanging membrane, method for manufacturing the same and energy storage system comprising the same
US-2019363385-A1 · Nov 28, 2019 · US
Heat-Induced Grafting Of Nonwovens For High Capacity Ion Exchange Separation
US-2019284321-A1 · Sep 19, 2019 · US
Composite electrolyte membrane and method for manufacturing same
US-10364331-B2 · Jul 30, 2019 · US
Ion exchange membrane, polymer element, electronic apparatus, camera module, and imaging device
US-10351684-B2 · Jul 16, 2019 · US
Bio-cellulose membrane and method for producing the same
US-10307347-B2 · Jun 4, 2019 · US
Methods for manufacturing ion exchange membranes
US-10252223-B2 · Apr 9, 2019 · US
Polymer electrolyte composition, polymer electrolyte membrane using same, catalyst coated membrane, membrane electrode assembly and polymer electrolyte fuel cell
US-10253147-B2 · Apr 9, 2019 · US
Ion exchange membrane and method for manufacturing same
US-2019022634-A1 · Jan 24, 2019 · US
Microporous Polyimide Film and Process for Producing the Same
US-2018294456-A1 · Oct 11, 2018 · US
Lead ion sensors, methods of making and uses thereof
US-9952173-B2 · Apr 24, 2018 · US
Electrolyte-separating membrane for selective transfer of cations through the membrane and process for manufacturing said membrane
US-9925495-B2 · Mar 27, 2018 · US
Inorganic microporous ion exchange membranes for redox flow batteries
US-9911985-B2 · Mar 6, 2018 · US
Interpenetrating network of anion-exchange polymers, production method thereof and use of same
US-9911999-B2 · Mar 6, 2018 · US
Process for preparing an ion-exchange composite material comprising a specific polymer matrix and a filler consisting of ion-exchange particles
US-9905872-B2 · Feb 27, 2018 · US
Frequently asked questions
Answers are generated from the same data shown on this page.
- What is CPC C08J5/2275?
- CPC C08J5/2275 is the Cooperative Patent Classification code for “Heterogeneous membranes.”
- How many patents are filed under CPC C08J5/2275 (Heterogeneous membranes)?
- Our database includes 97 publications tagged with this CPC code.
- Is patent activity under CPC C08J5/2275 growing?
- Publication counts under this code: 9 in 2024 vs 5 in 2025 (latest complete years).