Patents by Inventor Kowhei Nishikawa

Kowhei Nishikawa 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 assembly
    Patent number: 4227225
    Abstract: A magnetic head formed by coupling a plurality of U-shaped cores via a spacer plate close to both surfaces of a shield layer forming magnetic plates each with a width of the cores equal to a desired width of magnetic track, forming a spacer auxiliary slot in a shield plate comprising the magnetic plate and the spacer plate, bisecting the coupled cores to define a gap therebetween with reference to the auxiliary slot and forming a desired magnetic gap by interposing a spacer into the gap of the bisected cores.
    Type: Grant
    Filed: May 8, 1978
    Date of Patent: October 7, 1980
    Assignee: Matsushita Electric Industrial Co., Ltd.
    Inventor: Kowhei Nishikawa