Proton exchange membrane with enhanced chemical stability and method of preparing thereof
US-2020343569-A1 · Oct 29, 2020 · US
After-treatment
After-treatment · 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 | C08J5/2287 |
| Official title | {After-treatment} |
| Display label | After-treatment |
| Total patents | 133 |
Filing trend
Year-over-year patent counts classified under this CPC code.
Filing activity over the last five years is growing.
| Year | Patents |
|---|---|
| 2015 | 3 |
| 2016 | 3 |
| 2017 | 13 |
| 2018 | 17 |
| 2019 | 12 |
| 2020 | 18 |
| 2021 | 11 |
| 2022 | 13 |
| 2023 | 9 |
| 2024 | 17 |
| 2025 | 16 |
| 2026 | 1 |
Representative patents
Representative publications under this CPC code from precomputed stats, or recent filings when stats are unavailable.
Ion-conducting membrane production method and production device
US-10774190-B2 · Sep 15, 2020 · US
Nanostructured polyelectrolytes for ion-selective membranes
US-10766005-B2 · Sep 8, 2020 · US
Ion-conducting membrane production method and production device
US-2020262990-A1 · Aug 20, 2020 · US
Resin composition for manufacturing separator, preparation method therefor, and battery comprising same
US-2020266412-A1 · Aug 20, 2020 · US
Ionic functionalization of aromatic polymers for ion exchange membranes
US-2020238272-A1 · Jul 30, 2020 · US
Proton conducting membrane comprising monolithic 2D material and ionomer, a process for preparing same and use of same in fuel cell and hydrogen gas sensor
US-10651490-B2 · May 12, 2020 · US
High-performance anion exchange membranes and methods of making same
US-10626029-B2 · Apr 21, 2020 · US
Self-humidifying ion-exchange composite membrane and method for fabricating the same
US-2020102435-A1 · Apr 2, 2020 · US
Ion exchange membranes
US-10597502-B2 · Mar 24, 2020 · US
Homogeneous anion-exchange composite membrane having excellent chemical resistance and method for producing the same
US-10561991-B2 · Feb 18, 2020 · US
Ion exchanging membrane, method for manufacturing the same and energy storage system comprising the same
US-10559840-B2 · Feb 11, 2020 · US
Polymer ion exchange membrane and method of preparing same
US-10516182-B2 · Dec 24, 2019 · US
Ion exchanging membrane, method for manufacturing the same and energy storage system comprising the same
US-2019363385-A1 · Nov 28, 2019 · US
Ion exchange membranes
US-10464058-B2 · Nov 5, 2019 · US
Ion conducting membrane, making method thereof, secondary battery comprising the same
US-2019334147-A1 · Oct 31, 2019 · US
Functionalization of diels-alder polyphenylene polymers
US-10442887-B2 · Oct 15, 2019 · US
Anion exchange stationary phases based on crosslinked hydroxyalkylamine layer and glycidol
US-2019291094-A1 · Sep 26, 2019 · US
Strong cation exchange chromatographic matrix and method for using same
US-2019217285-A1 · Jul 18, 2019 · US
Electro-controllable ion exchange membrane
US-2019193029-A1 · Jun 27, 2019 · US
Frequently asked questions
Answers are generated from the same data shown on this page.
- What is CPC C08J5/2287?
- CPC C08J5/2287 is the Cooperative Patent Classification code for “After-treatment.”
- How many patents are filed under CPC C08J5/2287 (After-treatment)?
- Our database includes 133 publications tagged with this CPC code.
- Is patent activity under CPC C08J5/2287 growing?
- Publication counts under this code: 17 in 2024 vs 16 in 2025 (latest complete years).