Porous membranes for high pressure filtration
US-12064731-B2 · Aug 20, 2024 · US
Homopolymers or copolymers of N-vinyl-pyrrolidones
Homopolymers or copolymers of N-vinyl-pyrrolidones · 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 | C08J2339/06 |
| Official title | Homopolymers or copolymers of N-vinyl-pyrrolidones |
| Display label | Homopolymers or copolymers of N-vinyl-pyrrolidones |
| Total patents | 101 |
Filing trend
Year-over-year patent counts classified under this CPC code.
Filing activity over the last five years is declining.
| Year | Patents |
|---|---|
| 2015 | 7 |
| 2016 | 11 |
| 2017 | 6 |
| 2018 | 7 |
| 2019 | 15 |
| 2020 | 8 |
| 2021 | 13 |
| 2022 | 11 |
| 2023 | 8 |
| 2024 | 6 |
| 2025 | 7 |
| 2026 | 2 |
Representative patents
Representative publications under this CPC code from precomputed stats, or recent filings when stats are unavailable.
Degradable resin molding and production method for degradable resin molding
US-2021388491-A1 · Dec 16, 2021 · US
N-vinyl lactam-based crosslinked polymer, cosmetic, absorbent agent for ink, and absorbent composite
US-11173472-B2 · Nov 16, 2021 · US
Hydrogel composition and hydrogel lens
US-2021315807-A1 · Oct 14, 2021 · US
Alkali-Stable Nanofiltration Composite Membrane and Method of Manufacture Thereof
US-2021252458-A1 · Aug 19, 2021 · US
Multi-armed polymers comprising free-radical-polymerizable monomers and compositions, systems and methods pertaining to the same
US-2021061950-A1 · Mar 4, 2021 · US
Method for preparing bilayer scaffold through single process and method for regenerating tissue using bilayer scaffold obtained by preparing method
US-10864300-B2 · Dec 15, 2020 · US
Method of making a fiber preform for ceramic matrix composite (CMC) fabrication utilizing a fugitive binder
US-10822280-B2 · Nov 3, 2020 · US
Photonic crystal structure and anti-forgery color conversion film comprising same
US-2020225391-A1 · Jul 16, 2020 · US
Method for making light-blocking articles
US-2020216632-A1 · Jul 9, 2020 · US
Molecularly engineered high thermal conductivity polymers and methods for making the same
US-10696885-B2 · Jun 30, 2020 · US
Method of making light-blocking articles
US-10696814-B2 · Jun 30, 2020 · US
Hydrogel-forming composition and highly transparent hydrogel prepared therefrom
US-2020115539-A1 · Apr 16, 2020 · US
Sealing compositions for water soluble films and methods of using
US-2020062913-A1 · Feb 27, 2020 · US
Method of making light-blocking articles
US-2019390029-A1 · Dec 26, 2019 · US
Qd hydrogel, qd patterning method, and qd transfer printing method
US-2019369487-A1 · Dec 5, 2019 · US
Method for Producing Polymer Film
US-2019345300-A1 · Nov 14, 2019 · US
Composite powder in which porous polymer is impregnated with scoria powder particles, cosmetic composition containing same, and process for producing same
US-10472485-B2 · Nov 12, 2019 · US
N-vinyl lactam-based crosslinked polymer, cosmetic, absorbent agent for ink, and absorbent composite
US-2019315960-A1 · Oct 17, 2019 · US
N-vinyl lactam-based crosslinked polymer, cosmetic, absorbent agent for ink, and absorbent composite
US-2019300629-A1 · Oct 3, 2019 · US
Frequently asked questions
Answers are generated from the same data shown on this page.
- What is CPC C08J2339/06?
- CPC C08J2339/06 is the Cooperative Patent Classification code for “Homopolymers or copolymers of N-vinyl-pyrrolidones.”
- How many patents are filed under CPC C08J2339/06 (Homopolymers or copolymers of N-vinyl-pyrrolidones)?
- Our database includes 101 publications tagged with this CPC code.
- Is patent activity under CPC C08J2339/06 growing?
- Publication counts under this code: 6 in 2024 vs 7 in 2025 (latest complete years).