{
  "patent_number": "US 12738390",
  "country": "US",
  "title": "Electrical Wire with a Heat-Resistant Plastic Coating",
  "original_title": "Coated electrical wire",
  "summary": "This patent describes an electrical wire coated with a specific plastic blend, a copolymer of tetrafluoroethylene and perfluoro(propyl vinyl ether), designed to withstand high temperatures and improve durability.",
  "what_it_does": "This patent details an electrical wire featuring a core wire surrounded by a special coating layer. This coating is made from a copolymer, which is a type of plastic built from two different molecular units: tetrafluoroethylene and perfluoro(propyl vinyl ether). The patent specifies precise characteristics for this copolymer: the perfluoro(propyl vinyl ether) unit must make up 4.8 to 5.5% of the total monomer units by mass. Additionally, the plastic's melt flow rate at 372°C must be between 28.0 and 37.0 g/10 min, and it needs to have 50 or fewer functional groups per 10^6 main-chain carbon atoms. For example, this type of wire could be used in aircraft engines where wiring must endure extreme heat and harsh chemicals.",
  "what_it_does_not_cover": [
    "Does not cover electrical wires coated with materials other than the specified tetrafluoroethylene and perfluoro(propyl vinyl ether) copolymer.",
    "Does not cover coatings where the perfluoro(propyl vinyl ether) unit content is outside the 4.8 to 5.5% by mass range.",
    "Does not cover coatings where the copolymer's melt flow rate at 372°C is outside the 28.0 to 37.0 g/10 min range.",
    "Does not cover coatings where the copolymer has more than 50 functional groups per 10^6 main-chain carbon atoms.",
    "Does not cover non-electrical wires, such as optical fibers, regardless of their coating."
  ],
  "filed": "2023-08-22",
  "granted": "2026-09-15",
  "expires": null,
  "status": "active",
  "holder": null,
  "holder_url": null,
  "inventors": [],
  "times_cited": 0,
  "tags": [
    "materials",
    "electrical",
    "manufacturing",
    "automotive",
    "aerospace",
    "telecommunications"
  ],
  "abstract": "A coated electric wire having a core wire, and a coating layer installed on the periphery of the core wire, wherein the coating layer contains a copolymer containing tetrafluoroethylene unit and perfluoro(propyl vinyl ether) unit, the content of perfluoro(propyl vinyl ether) unit in the copolymer is 4.8 to 5.5% by mass with respect to the whole of the monomer units, the melt flow rate at 372° C. of the copolymer is 28.0 to 37.0 g/10 min, and the number of functional groups of the copolymer is 50 or less per 10 6  main-chain carbon atoms.",
  "url": "https://patentbrief.org/patent/us/12738390/coated-electrical-wire",
  "markdown_url": "https://patentbrief.org/patent/us/12738390/coated-electrical-wire/md",
  "google_patents_url": "https://patents.google.com/patent/US12738390",
  "relatedPatents": []
}