Patents by Inventor Shinzi Iida

Shinzi Iida 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 core utilizing a non-magnetic layer
    Patent number: 5025343
    Abstract: A magnetic head core having a generally annular structure with an inner coil-winding aperture, and a magnetic gap which has a predetermined width and which is formed so as to extend in a direction across the annulus of the annular structure. The annular structure is formed by a plurality of ferrite core elements bonded together by direct solid-solid reaction bonding, with a non-magnetic layer of SiO or SiO.sub.2 interposed between two opposed portions of the ferrite core elements which define the magnetic gap. The non-magnetic layer defines the width of the magnetic gap.
    Type: Grant
    Filed: August 8, 1990
    Date of Patent: June 18, 1991
    Assignee: NGK Insulators, Ltd.
    Inventors: Shinzi Iida, Fuminori Takeya, Shinya Aoki
  • Method for producing magnetic head core
    Patent number: 4967466
    Abstract: A magnetic head core having a generally annular structure with an inner coil-winding aperture, and a magnetic gap which has a predetermined width and which is formed so as to extend in a direction across the annulus of the annular structure. The annular structure is formed by a plurality of ferrite core elements bonded together by direct solid-solid reaction bonding, with a non-magnetic layer of SiO or SiO.sub.2 interposed between two opposed portions of the ferrite core elements which define the magnetic gap. The non-magnetic layer defines the width of the magnetic gap.
    Type: Grant
    Filed: March 31, 1989
    Date of Patent: November 6, 1990
    Assignee: NGK Insulators, Ltd.
    Inventors: Fuminori Takeya, Shinya Aoki, Shinzi Iida