Patents by Inventor Youichi Fukuoka

Youichi Fukuoka 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 and apparatus for measuring the size of wire rod with laser beam and reference rod
    Patent number: 4871910
    Abstract: A method for measuring the size of a wire rod comprises the steps of turning a laser beam from a laser beam source into a parallel beam used for scanning, disposing a first wire rod having an unknown size and a second wire rod having an already known size larger than the diameter of the spot of the laser beam adjacent to each other in a direction of scanning with the laser beam, receiving the laser beam traversed the first and second wire rods thereby generating a corresponding electrical output signal, and calculating the size of the first wire rod on the basis of the electrical output signal.
    Type: Grant
    Filed: July 22, 1988
    Date of Patent: October 3, 1989
    Assignee: Hitachi, Ltd.
    Inventors: Toru Ueno, Youichi Fukuoka, Seiichi Baba, Kaoru Miyoshi, Kazuto Kinoshita