Patents by Inventor Michio Ushijima

Michio Ushijima 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).

  • Coating for inspection of cracking in structure
    Patent number: 7341777
    Abstract: In a coating for the inspection of a crack in a structure wherein a coating layer having dispersed therein microcapsules with a visualizing liquid sealed therein is formed on the surface of the structure and when a crack is developed in the structure and propagated to the coating layer, the microcapsules dispersed in the coating layer are ruptured and the visualizing liquid flows out from the ruptured microcapsules and reaches the surface of the coating layer along the crack in the coating layer, thereby making it possible to detect the occurrence of the crack in the structure: at least one second coating layer not containing the microcapsules is formed over the first coating layer with the microcapsules dispersed therein, the second coating layer being transparent and having an outermost layer flexible enough to be prevented from being cracked even upon cracking in the first coating layer.
    Type: Grant
    Filed: June 24, 2004
    Date of Patent: March 11, 2008
    Assignees: National Maritime Research Institute, Three Bond Co., Ltd.
    Inventors: Ichihiko Takahashi, Michio Ushijima, Mitsuhiko Uchida, Tomio Onoguchi
  • Coating for inspection of cracking in structure
    Publication number: 20060154046
    Abstract: In a coating for the inspection of a crack in a structure wherein a coating layer having dispersed therein microcapsules with a visualizing liquid sealed therein is formed on the surface of the structure and when a crack is developed in the structure and propagated to the coating layer, the microcapsules dispersed in the coating layer are ruptured and the visualizing liquid flows out from the ruptured microcapsules and reaches the surface of the coating layer along the crack in the coating layer, thereby making it possible to detect the occurrence of the crack in the structure: at least one second coating layer not containing the microcapsules is formed over the first coating layer with the microcapsules dispersed therein, the second coating layer being transparent and having an outermost layer flexible enough to be prevented from being cracked even upon cracking in the first coating layer.
    Type: Application
    Filed: June 24, 2004
    Publication date: July 13, 2006
    Inventors: Ichihiko Takahashi, Michio Ushijima, Mitsuhiko Uchida, Tomio Onoguchi