Polymer-based piezoelectric composite material, piezoelectric film, piezoelectric speaker, and flexible display
US-12477949-B2 · Nov 18, 2025 · US
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Nitriles
Nitriles · 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 | C08F20/42 |
| Official title | Nitriles |
| Display label | Nitriles |
| Total patents | 13 |
Filing trend
Year-over-year patent counts classified under this CPC code.
Filing activity over the last five years is stable.
| Year | Patents |
|---|---|
| 2017 | 3 |
| 2019 | 1 |
| 2020 | 2 |
| 2021 | 1 |
| 2022 | 2 |
| 2023 | 2 |
| 2025 | 2 |
Representative patents
Representative publications under this CPC code from precomputed stats, or recent filings when stats are unavailable.
Resin composition, resin film using same, metal foil with resin, metal-clad laminate, and wiring board
US-12384862-B2 · Aug 12, 2025 · US
Resin composition, resin film using same, metal foil with resin, metal-clad laminate, and wiring board
US-2023167215-A1 · Jun 1, 2023 · US
Polymer manufacturing method
US-11608397-B2 · Mar 21, 2023 · US
Method of preparing acrylonitrile-based polymer for producing carbon fiber
US-11427659-B2 · Aug 30, 2022 · US
Polymer-based piezoelectric composite material, piezoelectric film, piezoelectric speaker, and flexible display
US-2022115581-A1 · Apr 14, 2022 · US
Solid cyanoacrylate compositions
US-11066507-B2 · Jul 20, 2021 · US
Solid cyanoacrylate compositions
US-2020231736-A1 · Jul 23, 2020 · US
Polymer manufacturing method
US-2020223961-A1 · Jul 16, 2020 · US
Method of preparing acrylonitrile-based polymer for producing carbon fiber
US-2019375870-A1 · Dec 12, 2019 · US
Polymer compound for a conductive polymer and method for producing same
US-9777093-B2 · Oct 3, 2017 · US
Polymer compound for a conductive polymer and method for producing same
US-2017058066-A1 · Mar 2, 2017 · US
Continuous reaction apparatus and method of continuous polymerization using the same
US-2017022300-A1 · Jan 26, 2017 · US