Patents by Inventor Ryoo Gotoo

Ryoo Gotoo 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).

  • Magnetic head containing amorphous alloy and crystallizable glass
    Patent number: 4816949
    Abstract: The present invention relates to a magnetic head in which a magnetic metal film comprising a Co-containing amorphous alloy and a crystallizable glass of the PbO-B.sub.2 O.sub.3 -ZnO system as a solder glass are used. The magnetic head of the present invention has about 2 times higher recording density than the conventional one as a magnetic head for floppy disks and hard disks because an amorphous alloy is used. Since a crystallizable glass is used as the glass, there can be obtained a magnetic head having a high strength and superior humidity resistance and reliability.
    Type: Grant
    Filed: September 9, 1987
    Date of Patent: March 28, 1989
    Assignee: Hitachi, Ltd.
    Inventors: Seiichi Yamada, Takashi Naitoh, Takashi Namekawa, Akira Ikegami, Ryoo Gotoo, Toshikazu Nishiyama