Patents by Inventor Nobukiyo Imagawa

Nobukiyo Imagawa 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).

  • Column base structure and connection arrangement
    Patent number: 5505033
    Abstract: A column base structure formed by integrally joining a column base metal fitting having a raised portion and a base plate to a steel-frame column, and joining the column base metal fitting joined to the steel-frame column to a concrete foundation via anchor bolts embedded in the concrete foundation, in which an anchor-bolt retainer having an upper anchor plate and a lower anchor plate is fixedly fitted to support members installed on a concrete subslab, anchor bolts are hold in position via the anchor-bolt retainer, and the anchor bolts are embedded, together with the anchor-bolt retainer, into the concrete foundation.
    Type: Grant
    Filed: April 19, 1991
    Date of Patent: April 9, 1996
    Assignee: 501 Hitachi Metals Ltd.
    Inventors: Hideshige Matsuo, Nobukiyo Imagawa, Isamu Yamamoto, Michio Itoh, Kuniaki Sato