Patents by Inventor Sei Furuichi

Sei Furuichi 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).

  • Back material of metal band saw high in fatigue strength
    Patent number: 4058650
    Abstract: A back material of a metal band saw high in fatigue strength which consists essentially of, by weight, 0.20 - 0.33% C, up to 1.5% Si, up to 1.5% Mn, 3.5 - 6.5% Cr, 0.05 - 0.40% V, 0.05 - 0.10% Al, 0.02 - 0.30% Nb, at least one of 1.0 - 3.0% Mo and up to 4.0% W and the balance Fe and impurities, the sum of (% Mo) + 1/2 (% W) being within the range of 1.0 - 3.0%.
    Type: Grant
    Filed: July 9, 1976
    Date of Patent: November 15, 1977
    Assignee: Hitachi Metals, Ltd.
    Inventors: Kingo Kiyonaga, Ryousei Ago, Sei Furuichi