Patents by Inventor Yasukasu Unigame

Yasukasu Unigame 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 for evaluating reliability of steel and high-reliability steel obtained by the same
    Patent number: 7971484
    Abstract: A method for evaluating the reliability of steel in terms of inclusions is characterized in that the inclusions of approximately 100 ?m or less in maximum inclusion size are evaluated by microscopy combined with the extreme-value statistical analysis; the inclusions of approximately 100 ?m or greater in maximum inclusion size are evaluated by the ultrasonic flaw detection testing performed at a frequency of 5 to 25 MHz; and the reliability of the steel is evaluated based on the results of the extreme-value statistical analysis applied to the results of the microscopy and the results of the ultrasonic flaw detection testing combined.
    Type: Grant
    Filed: April 18, 2006
    Date of Patent: July 5, 2011
    Assignee: Sanyo Special Steel Co., Ltd.
    Inventors: Kaiko Sato, Misaki Nagao, Kazuhiko Hiraoka, Ichiro Takasu, Yasukasu Unigame