Patents by Inventor Yosio Manabe

Yosio Manabe 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 formed of thin metal film including a chevron shape
    Patent number: 5047885
    Abstract: Disclosed is a magnetic head formed of a thin metal film in which a metal magnetic film in the form of a chevron is formed on a substrate, and two half cores in each of which the apex portion of the chevron-shaped metal magnetic film is flattened are integrated in such a manner as to face each other with a gap member placed therebetween, the magnetic head comprising a desired track width not more twice thicknesses d.sub.1, d.sub.2 of the metal magnetic film on both sides of the apex portion, and the following formula is met:0.74.ltoreq.d.sub.2 /d.sub.1 .ltoreq.1.35.
    Type: Grant
    Filed: November 10, 1988
    Date of Patent: September 10, 1991
    Assignee: Hitachi, Ltd.
    Inventors: Hideo Zama, Hitoshi Idegami, Yosio Manabe, Kenkichi Inada