Patents by Inventor Yukari Utsumi

Yukari Utsumi 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).

  • Amorphous soft magnetic material
    Patent number: 6132891
    Abstract: There is disclosed an amorphous soft magnetic material represented by a composition formula:Co.sub.x Zr.sub.y Pd.sub.z M.sub.a wherein M denotes at least one element selected from a group consisting of niobium, chromium, vanadium, tantalum, tungsten, molybdenum; and0.82.ltoreq.x.ltoreq.0.940.04.ltoreq.y.ltoreq.0.100.01.ltoreq.z.ltoreq.0.080.01.ltoreq.a.ltoreq.0.10.The amorphous soft magnetic material, which has a high saturated magnetic flux density, a low coercive force, a high magnetic permeability and excellent wear and corrosion resistances, can be obtained by adding at least one or more of the elements of the Va and VIa groups to a Co--Zr--Pd amorphous soft magnetic material.
    Type: Grant
    Filed: July 6, 1992
    Date of Patent: October 17, 2000
    Assignee: Sony Corporation
    Inventors: Tatsuo Kumura, Yukari Utsumi, Hideaki Karamon