Patents by Inventor Yochiteru Chiba

Yochiteru Chiba 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).

  • Butt welded tubular structure of austenite stainless steel
    Patent number: 4348041
    Abstract: A butt welded tubular structure composed of tubular members of austenite stainless steel including a restraining member providing a cover to the entire outer circumferential surfaces of a welded joint and heat affected zones of the tubular members, the restraining member being formed of a metal or alloy of lower stress corrosion cracking sensitivity than the material of the tubular members and joined at the entire surfaces of opposite end portions thereof to the tubular members by welding, although the restraining member is not joined to the tubular members at portions of the restraining member corresponding to the welded joint and heat affected zones of the tubular members.
    Type: Grant
    Filed: January 24, 1979
    Date of Patent: September 7, 1982
    Assignee: Hitachi, Ltd.
    Inventors: Katsuyuki Imai, Isao Masaoka, Yochiteru Chiba, Masayoshi Kanno, Jiro Kuniya, Hisao Itow