Patents by Inventor Toshifumi Sakurai

Toshifumi Sakurai has filed for patents to protect the following inventions. This listing includes patent applications that are pending as well as patents that have already been granted by the United States Patent and Trademark Office (USPTO).

  • Coil wire
    Patent number: 4605917
    Abstract: A coil wire has a lubricant film formed on an outer surface of an insulation film covering a conductor. The lubricant film is made of polypropylene glycol or a material obtained by substituting a hydrogen atom at at least one end of polypropylene glycol with another reactive group so as to provide a coil wire wherein generation of organic gases can be suppressed.
    Type: Grant
    Filed: September 14, 1983
    Date of Patent: August 12, 1986
    Assignee: NEC Corporation
    Inventors: Tatsumi Ide, Toshifumi Sakurai, Masahiro Izumi, Kimio Sugimura