Ion-exchange membrane, membrane electrode assembly, cell for redox flow battery, and redox flow battery
US-2025273719-A1 · Aug 28, 2025 · US
Homopolymers or copolymers of vinyl-pyridine
Homopolymers or copolymers of vinyl-pyridine · 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 | C09D139/08 |
| Official title | Homopolymers or copolymers of vinyl-pyridine |
| Display label | Homopolymers or copolymers of vinyl-pyridine |
| Total patents | 30 |
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 | 1 |
| 2016 | 1 |
| 2017 | 6 |
| 2018 | 1 |
| 2019 | 3 |
| 2020 | 4 |
| 2021 | 3 |
| 2022 | 3 |
| 2023 | 4 |
| 2024 | 3 |
| 2025 | 1 |
Representative patents
Representative publications under this CPC code from precomputed stats, or recent filings when stats are unavailable.
Carbon material dispersion
US-12146045-B2 · Nov 19, 2024 · US
Dye-labeled polymers and methods for preparing same
US-2024327655-A1 · Oct 3, 2024 · US
Carbon material dispersion
US-2024191054-A1 · Jun 13, 2024 · US
Optical halogenated polymer thin film with ultra-high refractive index
US-2023383137-A1 · Nov 30, 2023 · US
Thin film, method of manufacturing thin film, and light-emitting device including thin film
US-11737347-B2 · Aug 22, 2023 · US
Method of manufacturing protective film agent
US-11637033-B2 · Apr 25, 2023 · US
Coating composition for use with an overcoated photoresist
US-11567408-B2 · Jan 31, 2023 · US
Protective film agent for laser dicing
US-2022139754-A1 · May 5, 2022 · US
Protective film agent for laser dicing
US-11322383-B2 · May 3, 2022 · US
Switchable water-based paint or coating compositions
US-11236250-B2 · Feb 1, 2022 · US
Thin film, method of manufacturing thin film, and light-emitting device including thin film
US-2021284811-A1 · Sep 16, 2021 · US
Coating composition for use with an overcoated photoresist
US-2021109447-A1 · Apr 15, 2021 · US
Protective film material for biosensor probe
US-2021072179-A1 · Mar 11, 2021 · US
Coating compositions and elastic barrier coatings formed therefrom
US-10836924-B2 · Nov 17, 2020 · US
Coating Compositions and Elastic Barrier Coatings Formed Therefrom
US-2020291255-A1 · Sep 17, 2020 · US
Protective film agent for laser dicing
US-2020234994-A1 · Jul 23, 2020 · US
Modified polymers and stable emulsions comprising the same
US-10584220-B2 · Mar 10, 2020 · US
Antifouling and chlorine-resistant ultrathin coatings on reverse osmosis membranes
US-10519326-B2 · Dec 31, 2019 · US
Mono-azide compound for photo-induced cross-linking polymer strands
US-10301452-B2 · May 28, 2019 · US
Frequently asked questions
Answers are generated from the same data shown on this page.
- What is CPC C09D139/08?
- CPC C09D139/08 is the Cooperative Patent Classification code for “Homopolymers or copolymers of vinyl-pyridine.”
- How many patents are filed under CPC C09D139/08 (Homopolymers or copolymers of vinyl-pyridine)?
- Our database includes 30 publications tagged with this CPC code.
- Is patent activity under CPC C09D139/08 growing?
- Publication counts under this code: 3 in 2024 vs 1 in 2025 (latest complete years).