Patents by Inventor Chiori Takahashi

Chiori Takahashi 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).

  • Method of suppressing extension of fatigue crack, method of detecting fatigue crack and paste used for the methods
    Patent number: 7963015
    Abstract: A method of detecting fatigue crack by which the fatigue crack can be easily detected by visual observation even in a relatively early stage, and a method of restraining propagation thereof. The detection method includes the steps of: (a) preparing a paste in which particles having hardness not less than that of a base material and an oil having viscosity are mixed with each other; (b) applying the paste to a desired portion of the base material; and (c) detecting fatigue crack based on a change in color generated by movement of base material powder to a surface of the paste, and the base material powder is produced when the particles grind the base material due to opening and closing of the fatigue crack in the base material.
    Type: Grant
    Filed: July 1, 2004
    Date of Patent: June 21, 2011
    Assignee: National Maritime Research Institute
    Inventors: Ichihiko Takahashi, Chiori Takahashi
  • Method of suppressing extension of fatigue crack, method if detecting fatique crack and paste used for the methods
    Publication number: 20060163332
    Abstract: A method of detecting fatigue crack by which the fatigue crack can be easily detected by visual observation even in a relatively early stage, and a method of restraining propagation thereof. The detection method includes the steps of: (a) preparing a paste in which particles having hardness not less than that of a base material and an oil having viscosity are mixed with each other; (b) applying the paste to a desired portion of the base material; and (c) detecting fatigue crack based on a change in color generated by movement of base material powder to a surface of the paste, and the base material powder is produced when the particles grind the base material due to opening and closing of the fatigue crack in the base material.
    Type: Application
    Filed: July 1, 2004
    Publication date: July 27, 2006
    Inventors: Ichihiko Takahashi, Chiori Takahashi