Thermally Conductive Flame-Proof Polycarbonate Compositions Having a High Comparative Tracking Index
US-2025257209-A1 · Aug 14, 2025 · US
Polycarbonates
Polycarbonates · Cooperative Patent Classification (CPC)
Electric circuits, power, telecommunications, and semiconductors.
Related technology areas
Mapped technology topics for this CPC code.
| Metric | Value |
|---|---|
| CPC code | H01B3/426 |
| Official title | {Polycarbonates} |
| Display label | Polycarbonates |
| Total patents | 46 |
Filing trend
Year-over-year patent counts classified under this CPC code.
Filing activity over the last five years is declining.
| Year | Patents |
|---|---|
| 2015 | 1 |
| 2016 | 5 |
| 2017 | 6 |
| 2018 | 4 |
| 2019 | 9 |
| 2020 | 5 |
| 2021 | 4 |
| 2022 | 3 |
| 2023 | 3 |
| 2024 | 4 |
| 2025 | 2 |
Representative patents
Representative publications under this CPC code from precomputed stats, or recent filings when stats are unavailable.
EE Device Comprising a Composite Polycarbonate Element Having High CTI
US-2025215218-A1 · Jul 3, 2025 · US
Extruded capacitor films with high temperature performance, methods of manufacture, and articles containing the same
US-12180365-B2 · Dec 31, 2024 · US
Polycarbonate copolymer and associated film extrusion composition, extruded film, and capacitor
US-11976195-B2 · May 7, 2024 · US
Polycarbonate copolymer and associated film extrusion composition, extruded film, and capacitor
US-2024117185-A1 · Apr 11, 2024 · US
Polycarbonate copolymer and associated film extrusion composition, extruded film, and capacitor
US-11866571-B2 · Jan 9, 2024 · US
Nanostructured insulation for electric machines
US-11855501-B2 · Dec 26, 2023 · US
Nanostructured insulation for electric machines
US-2023108742-A1 · Apr 6, 2023 · US
Nanostructured insulation for electric machines
US-11569701-B2 · Jan 31, 2023 · US
Hybrid filler based composite material
US-2022392662-A1 · Dec 8, 2022 · US
Flame retardant ploymer composition and methods of use
US-2022251332-A1 · Aug 11, 2022 · US
Extruded capacitor films with high temperature performance, methods of manufacture, and articles containing the same
US-2022010129-A1 · Jan 13, 2022 · US
Polycarbonate copolymer and associated film extrusion composition, extruded film, and capacitor
US-2021363351-A1 · Nov 25, 2021 · US
Method for manufacturing solid insulation member and insulation member thereof
US-11164686-B2 · Nov 2, 2021 · US
Hybrid wireline methods and apparatus
US-2021272718-A1 · Sep 2, 2021 · US
Water tree resistant cables
US-11031153-B2 · Jun 8, 2021 · US
Method for manufacturing solid insulation member and insulation member thereof
US-2020395149-A1 · Dec 17, 2020 · US
Water tree resistant cables
US-2020143959-A1 · May 7, 2020 · US
Nanostructured insulation for electric machines
US-2020052538-A1 · Feb 13, 2020 · US
Conductive plastic structure
US-10541066-B2 · Jan 21, 2020 · US
Frequently asked questions
Answers are generated from the same data shown on this page.
- What is CPC H01B3/426?
- CPC H01B3/426 is the Cooperative Patent Classification code for “Polycarbonates.”
- How many patents are filed under CPC H01B3/426 (Polycarbonates)?
- Our database includes 46 publications tagged with this CPC code.
- Is patent activity under CPC H01B3/426 growing?
- Publication counts under this code: 4 in 2024 vs 2 in 2025 (latest complete years).