Patents by Inventor Kouhachi Nomura

Kouhachi Nomura 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).

  • Iron-base amorphous alloys having improved fatigue and toughness characteristics
    Patent number: 4584034
    Abstract: An iron-base amorphous alloy is described, having improved fatigue and toughness characteristics consisting essentially of from 6 to 16 atom % Si, from 7.5 to 16 atom % B, and from 2 to 9 atom % Cr, provided that the composition ranges of Si, B, and Cr are within the quadrangles defined by a-b-c-d of FIG. 1, and e.sub.1 -f.sub.1 -g.sub.1 -h.sub.1 of FIG. 2, and the balance being substantially Fe. In addition to improved fatigue and toughness characteristics, the amorphous alloy has excellent tensile break strength, heat resistance, corrosion resistance and electromagnetic properties, and is therefore very useful for industrial reinforcements and electromagnetic materials.
    Type: Grant
    Filed: November 15, 1984
    Date of Patent: April 22, 1986
    Assignee: Unitika Ltd.
    Inventors: Michiaki Hagiwara, Akira Menju, Kouhachi Nomura, Akio Nakamura