Patents by Inventor Tatsuki Okawa

Tatsuki Okawa 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).

  • Laser beam machine for micro-hole machining
    Patent number: 6635849
    Abstract: The present invention relates to a laser beam machine having a laser oscillator, for generating a laser beam; a light path system, including galvano mirrors and an f&thgr; lens that form a light path along which the laser beam emitted by the laser oscillator is guided to an object; and a diffractive optical element, located along the light path leading from the laser oscillator to the galvano mirrors.
    Type: Grant
    Filed: December 19, 2001
    Date of Patent: October 21, 2003
    Assignee: Mitsubishi Denki Kabushiki Kaisha
    Inventors: Tatsuki Okawa, Yasuhiko Iwai, Miki Kurosawa, Masanori Mizuno