Patents by Inventor Ryosuke Nagatsu

Ryosuke Nagatsu 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).

  • Combined steel sheet pile, diaphragm wall, and method of disassembling combined steel sheet pile
    Patent number: 9512590
    Abstract: A method of disassembling a combined steel sheet pile in which a steel sheet pile and an H-shaped steel are joined to each other, in which, when viewed in a cross-section perpendicular to a longitudinal direction, in a weld zone formed by a fillet weld, the weld zone is cut off to leave a portion on a side which is closer to the steel sheet pile than a throat depth surface, and thereby the combined steel sheet pile is disassembled into the steel sheet pile and the H-shaped steel.
    Type: Grant
    Filed: July 13, 2012
    Date of Patent: December 6, 2016
    Assignee: NIPPON STEEL & SUMITOMO METAL CORPORATION
    Inventors: Ryosuke Nagatsu, Shigeki Terasaki, Kei Teshima, Tetsuya Akahoshi
  • COMBINED STEEL SHEET PILE, DIAPHRAGM WALL, AND METHOD OF DISASSEMBLING COMBINED STEEL SHEET PILE
    Publication number: 20140138427
    Abstract: A method of disassembling a combined steel sheet pile in which a steel sheet pile and an H-shaped steel are joined to each other, in which, when viewed in a cross-section perpendicular to a longitudinal direction, in a weld zone formed by a fillet weld, the weld zone is cut off to leave a portion on a side which is closer to the steel sheet pile than a throat depth surface, and thereby the combined steel sheet pile is disassembled into the steel sheet pile and the H-shaped steel.
    Type: Application
    Filed: July 13, 2012
    Publication date: May 22, 2014
    Applicant: NIPPON STEEL & SUMITOMO METAL CORPORATION
    Inventors: Ryosuke Nagatsu, Shigeki Terasaki, Kei Teshima, Tetsuya Akahoshi