Patents by Inventor Hidetoshi Nagayama

Hidetoshi Nagayama 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).

  • Copper wire for a magnet wire, magnet wire using same, and method for fabricating copper wire for a magnet wire
    Publication number: 20090286083
    Abstract: A copper wire for a magnet wire, a magnet wire using same, and a method for fabricating the copper wire for the magnet wire. The copper wire for the magnet wire is made from a casting material. The casting material is fabricated by continuous upward drawing from a molten copper or a molten copper alloy. An average crystal grain diameter of a columnar crystal structure formed at a surface layer of the casting material is 200 to 300 ?m. An upward drawing rate is 4 m/min to 5 m/min and a temperature of the molten copper or the molten copper is 1100 to 1200° C.
    Type: Application
    Filed: January 6, 2009
    Publication date: November 19, 2009
    Applicants: Hitachi Cable, Ltd., Hitachi Wire and Rod, Ltd., Hitachi Magnet Wire Corp.
    Inventors: Shinichi Kudo, Hidenori Abe, Hidetoshi Nagayama