Cation exchange resin, cation exchange membrane, electrolyte membrane, binder for forming electrode catalyst layer, and battery electrode catalyst layer
US-2026001983-A1 · Jan 1, 2026 · US
containing fluorine
containing fluorine · 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 | C08J5/2225 |
| Official title | {containing fluorine} |
| Display label | containing fluorine |
| Total patents | 47 |
Filing trend
Year-over-year patent counts classified under this CPC code.
Filing activity over the last five years is rapidly declining.
| Year | Patents |
|---|---|
| 2016 | 1 |
| 2017 | 2 |
| 2018 | 7 |
| 2019 | 3 |
| 2020 | 13 |
| 2021 | 8 |
| 2022 | 5 |
| 2023 | 3 |
| 2024 | 3 |
| 2025 | 1 |
| 2026 | 1 |
Representative patents
Representative publications under this CPC code from precomputed stats, or recent filings when stats are unavailable.
Ion-conducting layer with ion transfer paths aligned in the thickness direction and the fabrication method thereof
US-12199325-B2 · Jan 14, 2025 · US
Method for producing perfluorinated compound, and method for producing fluorinated polymer
US-2024141079-A1 · May 2, 2024 · US
Composite proton conductive membranes
US-11970589-B2 · Apr 30, 2024 · US
Ion exchange membrane and method for producing dry ion exchange membrane
US-11958950-B2 · Apr 16, 2024 · US
Multilayered ion exchange membranes
US-11712690-B2 · Aug 1, 2023 · US
Composite membrane including ion-conductive polymer layer and gas blocking inorganic particles, method of preparing the composite membrane, and lithium air battery including the composite membrane
US-11600828-B2 · Mar 7, 2023 · US
Liquid composition, method for producing it, and method for producing membrane/electrode assembly
US-11575140-B2 · Feb 7, 2023 · US
Polymer electrolyte membrane and method for producing the same
US-11539064-B2 · Dec 27, 2022 · US
Composite proton conductive membranes
US-2022243019-A1 · Aug 4, 2022 · US
Resin composition for manufacturing separator, preparation method therefor, and battery comprising same
US-11322796-B2 · May 3, 2022 · US
Composite ion exchange membrane and method of making same
US-11286357-B2 · Mar 29, 2022 · US
Block copolymer, ion-exchange membrane and method of preparing block copolymer
US-11220583-B2 · Jan 11, 2022 · US
Polymer electrolyte membrane, membrane electrode assembly, and solid polymer electrolyte fuel cell
US-11211626-B2 · Dec 28, 2021 · US
Multilayered ion exchange membranes
US-2021387174-A1 · Dec 16, 2021 · US
Fluoropolymer membrane for electrochemical devices
US-11145893-B2 · Oct 12, 2021 · US
Multilayered ion exchange membranes
US-11103864-B2 · Aug 31, 2021 · US
Ion-conducting layer with ion transfer paths aligned in the thickness direction and the fabrication method thereof
US-2021249675-A1 · Aug 12, 2021 · US
Ion exchange membrane and electrolyzer
US-11047056-B2 · Jun 29, 2021 · US
Self-humidifying ion-exchange composite membrane and method for fabricating the same
US-10941262-B2 · Mar 9, 2021 · US
Frequently asked questions
Answers are generated from the same data shown on this page.
- What is CPC C08J5/2225?
- CPC C08J5/2225 is the Cooperative Patent Classification code for “containing fluorine.”
- How many patents are filed under CPC C08J5/2225 (containing fluorine)?
- Our database includes 47 publications tagged with this CPC code.
- Is patent activity under CPC C08J5/2225 growing?
- Publication counts under this code: 3 in 2024 vs 1 in 2025 (latest complete years).