Patents by Inventor Minoru Maruta

Minoru Maruta 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).

  • Ultrasonic bonding apparatus and quality monitoring method
    Patent number: 5431324
    Abstract: An ultrasonic bonding apparatus comprises an ultrasonic wave controller, a bonding system including a bonding head, a laser oscillator, a laser optics, a vibration monitoring system including a vibrometer, and a mechanism for feeding a result of monitoring back to a bonding condition.
    Type: Grant
    Filed: January 22, 1993
    Date of Patent: July 11, 1995
    Assignee: Hitachi, Ltd.
    Inventors: Ryoichi Kajiwara, Mituo Katou, Kazuya Takahashi, Minoru Maruta, Tokiyuki Seto, Kunihiro Tsubosaki