Twisted wire and cable including the same
US12205735B2 · kind B2 · utility
Assignee
Inventor
Key dates
| Filing date | Oct 4, 2021 |
| Grant date | Jan 21, 2025 |
| Priority date | — |
| Expiry date | Aug 17, 2042 |
Classification
- Technology area (CPC H)Electricity
- CPC primaryH01B11/02
- WIPO fieldElectrical machinery, apparatus, energy
- WIPO sectorElectrical engineering
Abstract
A twisted pair cable is a twisted pair cable obtained by twisting two electric wires each of which includes a conductor portion and an insulator covering an outer periphery of the conductor portion. The insulator is made of a resin composition containing polypropylene, an antioxidant, and a copper inhibitor. The insulator has an external appearance abnormality development time exceeding 3,000 hours during a test of compatibility with PVC in contact with PVC at 100° C. The insulator has a relative dielectric constant of 2.0 to 2.5 and a dielectric dissipation factor of 1.0×10−3 or less when m electric field having a frequency of 1 GHz is applied.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.