Patents by Inventor Isao Takikawa

Isao Takikawa 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 measuring cavities in formed product formed by superplastic forming
    Patent number: 5648612
    Abstract: The concentration of cavities in a formed product formed by superplastic forming is measured based on a propagation velocity of ultrasonic waves in the formed product. An ultrasonic measuring head which oscillates and receives ultrasonic waves is brought into contact with the formed product. A measurement is made of the propagation time required for the ultrasonic waves to be incident from the ultrasonic measuring head on the formed product to return to the ultrasonic measuring head upon reflection from a rear surface of the formed product. The propagation velocity is obtained from the measured propagation time and the thickness of the formed product.
    Type: Grant
    Filed: January 31, 1996
    Date of Patent: July 15, 1997
    Assignee: Honda Giken Kogyo Kabushiki Kaisha
    Inventors: Isao Takikawa, Tadao Kanno