Patents by Inventor Yoshihito Oba

Yoshihito Oba 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).

  • Apparatus and method for mounting circuit element on printed circuit board
    Patent number: 4731923
    Abstract: An automatic circuit element mounting apparatus includes a lead wire detection mechanism for detecting lead wires of a circuit element held on a mounting head by suction and a substrate mark detection mechanism for detecting a mounting reference mark of a printed circuit board on which the circuit element is mounted by means of the mounting head, so that the amount of movement of the mounting head may be corrected depending on a result of detection by each of the detection mechanisms to precisely mount the circuit element on the printed circuit board. Also, a method for mounting a circuit element on a printed circuit board is disclosed.
    Type: Grant
    Filed: March 6, 1987
    Date of Patent: March 22, 1988
    Assignee: TDK Corporation
    Inventors: Hiroshi Yagi, Shuichi Tando, Yoshihito Oba, Toshihisa Nakamura