Patents by Inventor Kentaro Iwashita

Kentaro Iwashita 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).

  • Concrete structure member strengthened with prestressed FRP elements
    Patent number: 9322172
    Abstract: A concrete structure member strengthened with prestressed FRP elements includes a concrete structure body and a prestressed FRP element arranged on the former. An epoxy resin overlay surrounding the prestressed FRP element is provided to wrap it up, and a polymer concrete supplemental layer is provided outside the epoxy resin overlay. The concrete structure member can uniformly and effectively transfer the stress from the prestressed FRP element.
    Type: Grant
    Filed: December 8, 2010
    Date of Patent: April 26, 2016
    Assignee: SOUTHEAST UNIVERSITY
    Inventors: Zhishen Wu, Gang Wu, Kentaro Iwashita, Jianbiao Jiang, Min Zhang
  • Anchoring method for external bonding and reinforcing technique with prestressed fiber cloth
    Patent number: 8776474
    Abstract: An anchoring method for external bonding and reinforcing technique with prestressed fiber cloth mainly involves the following steps: stretching fiber cloth (1) on the surface of a reinforced member (2) firstly, and then bonding the prestressed fiber cloth (1) and the reinforced member (2) as a whole with resin. In addition, certain measures of installing a steel plate (5) for anchoring and using an anchor device (7) are applied to the anchorage end of the prestressed fiber cloth (1) on the end of the reinforced member (2). The prestress on the anchorage end of the prestressed fiber cloth (1) is partly or all released after thermosetting of the resin so as to eliminate or reduce the stress concentration on the end.
    Type: Grant
    Filed: December 2, 2010
    Date of Patent: July 15, 2014
    Assignee: Zhishen Wu & Beijing Texida Technology Co., Ltd.
    Inventors: Zhishen Wu, Kentaro Iwashita
  • CONCRETE STRUCTURE MEMBER STRENGTHENED WITH PRESTRESSED FRP ELEMENTS
    Publication number: 20130183497
    Abstract: A concrete structure member strengthened with prestressed FRP elements includes a concrete structure body and a prestressed FRP element arranged on the former. An epoxy resin overlay surrounding the prestressed FRP element is provided to wrap it up, and a polymer concrete supplemental layer is provided outside the epoxy resin overlay. The concrete structure member can uniformly and effectively transfer the stress from the prestressed FRP element.
    Type: Application
    Filed: December 8, 2010
    Publication date: July 18, 2013
    Applicant: SOUTHEAST UNIVERSITY
    Inventors: Zhishen Wu, Gang Wu, Kentaro Iwashita, Jianbiao Jiang, Min Zhang
  • ANCHORING METHOD FOR EXTERNAL BONDING AND REINFORCING TECHNIQUE WITH PRESTRESSED FIBER CLOTH
    Publication number: 20120311957
    Abstract: An anchoring method for external bonding and reinforcing technique with prestressed fiber cloth mainly involves the following steps: stretching fiber cloth (1) on the surface of a reinforced member (2) firstly, and then bonding the prestressed fiber cloth (1) and the reinforced member (2) as a whole with resin. In addition, certain measures of installing a steel plate (5) for anchoring and using an anchor device (7) are applied to the anchorage end of the prestressed fiber cloth (1) on the end of the reinforced member (2). The prestress on the anchorage end of the prestressed fiber cloth (1) is partly or all released after thermosetting of the resin so as to eliminate or reduce the stress concentration on the end.
    Type: Application
    Filed: December 2, 2010
    Publication date: December 13, 2012
    Inventors: Zhishen Wu, Kentaro Iwashita