Patents by Inventor Toshiharu Kitsutaka

Toshiharu Kitsutaka 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).

  • Method for measuring Fe coating weight of Fe-coated stainless steel sheet
    Patent number: 5325416
    Abstract: The surface of a stainless steel sheet before Fe-coating and the surface of the same stainless steel sheet after Fe-coating are analyzed by X-ray fluorescent analysis to determine the ratio of a fluorescent X-ray intensity I.sub.Cr b ascribable to CF to a fluorescent X-ray intensity I.sub.Fe b ascribable to Fe before Fe-coating, I.sub.Cr b/I.sub.Fe b, and the ratio of a fluorescent X-ray intensity I.sub.Cr a ascribable to Cr to a fluorescent X-ray intensity I.sub.Fe a ascribable to Fe after Fe-coating, I.sub.Cr a/I.sub.Fe a, and the resulting values are substituted in the following equation to calculate an Fe coating weight W (g/m.sup.2).W=(I.sub.Cr b/I.sub.Fe b-I.sub.Cr a/I.sub.Fe a)/Cwherein C represents a proportional constant determined by the type of steel of a stainless steel sheet.
    Type: Grant
    Filed: October 25, 1993
    Date of Patent: June 28, 1994
    Assignee: Nisshin Steel Co., Ltd.
    Inventors: Minoru Saito, Kazuaki Hosomi, Toshiharu Kitsutaka