Patents by Inventor Shu Ueda

Shu Ueda 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 shielding members
    Patent number: 4632250
    Abstract: A magnetic shielding device, adapted to protect a magnetic recording member against external magnetic fields, includes a plurality of spaced apart sheets of ferromagnetic material and the total thickness of the spacings between adjacent sheets of ferromagnetic material is selected to be larger than 0.5 mm. In a modification, the spaced sheets are covered with covers and the peripheral portions thereof are welded together. In another modification a sheet of insulating material having a surface area larger than those of the sheets of ferromagnetic material is interposed therebetween.
    Type: Grant
    Filed: July 19, 1984
    Date of Patent: December 30, 1986
    Assignee: Dynic Corporation
    Inventors: Shu Ueda, Joe Narumiya, Kenji Misawa