Patents by Inventor Yasumasa Nakanishi

Yasumasa Nakanishi 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).

  • Corner joint structure for bridge pier and method of producing the same
    Patent number: 7921495
    Abstract: An end face (20) of one (10a) of two adjacent thick steel plates (10a, 10b) intended to construct a corner joint of a bridge column is formed into a beveled end face (22). Laser beam welding is applied to a root portion (24) of the beveled end face, and arc welding is applied to bevels (26, 28) thereof so that grooves defined by the bevels (26, 28) are filled with weld metal (40).
    Type: Grant
    Filed: July 31, 2006
    Date of Patent: April 12, 2011
    Assignee: IHI Corporation
    Inventors: Koutarou Inose, Hiroto Yamaoka, Isao Kawaguchi, Yasumasa Nakanishi
  • STIFFENED PLATE AND A METHOD OF PRODUCING SAME
    Publication number: 20090258245
    Abstract: A stiffened plate obtained by welding one or a plurality of stiffening materials (20) onto the surface of a steel plate (10), the stiffened plate in which a single-bevel or single-J groove (24) is formed in an end (22) of the stiffening material, which contacts the steel plate; and a root portion (26) of the single-bevel or single-J groove is subjected to laser beam welding, and a splay portion (28) to arc welding.
    Type: Application
    Filed: July 31, 2006
    Publication date: October 15, 2009
    Inventors: Koutarou Inose, Hiroto Yamaoka, Isao Kawaguchi, Yasumasa Nakanishi
  • Corner Joint Structure for Bridge Pier and Method of Producing the Same
    Publication number: 20090255068
    Abstract: An end face (20) of one (10a) of two adjacent thick steel plates (10a, 10b) intended to construct a corner joint of a bridge column is formed into a beveled end face (22). Laser beam welding is applied to a root portion (24) of the beveled end face, and arc welding is applied to bevels (26, 28) thereof so that grooves defined by the bevels (26, 28) are filled with weld metal (40).
    Type: Application
    Filed: July 31, 2006
    Publication date: October 15, 2009
    Inventors: Koutarou Inose, Hiroto Yamaoka, Isao Kawaguchi, Yasumasa Nakanishi