Patents by Inventor Irie Taisuke

Irie Taisuke 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).

  • Plated steel sheet having excellent coating performance
    Patent number: 4835066
    Abstract: When a single-layer plated steel sheet comprising a coating of pure Zn or a Zn alloy (for example, a Zn-Fe alloy, a Zn-Ni alloy, etc.) is used in such a use that cationic electrodeposition coating is carried out as in the case of components for automobile bodies, craterings are generated on a coating film at the time of the electrodeposition coating to impair the coating appearance. Accordingly, this invention is to make it possible to stably restrain the generation of craterings on a coating film by providing a coating comprising Fe containing boron (B) or a coating comprising an Fe-Zn alloy having a boron-containing Fe percentage of 50% or more, on the surface of the coating of the pure Zn- or a Zn alloy-plated steel sheet.The boron content in the Fe coating or the Fe-Zn alloy coating may be preferably controlled to 0.001 to 3 wt. %. The coating weight may be preferably controlled to 0.5 to 10 g/m.sup.2 (per one side) in the case of the Fe coating, and 0.2 to 8 g/m.sup.
    Type: Grant
    Filed: October 30, 1987
    Date of Patent: May 30, 1989
    Assignee: Nisshin Steel Co., Ltd.
    Inventors: Irie Taisuke, Kotegawa Junichi, Watanabe Koichi, Hukuda Satoshi