Patents by Inventor Shigeto Takeshima

Shigeto Takeshima 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 apparatus
    Patent number: 5825801
    Abstract: The laser apparatus according to the present invention comprises an output mirror for reflecting a portion of a laser beam and transmitting therethrough a remaining thereof; a full reflection mirror located at a position opposite to this output mirror for completely reflecting a laser beam and changing the curvature; a laser medium provided between the output mirror and the full reflection mirror for causing induced emission; an aperture means for deciding a beam mode of a laser beam generated between the output mirror and the full reflection mirror and changing the aperture diameter; and a converging means for converging an outgoing laser beam from the output mirror and changing a distance from the output mirror according to a machining path; and the laser apparatus changes a curvature of the full reflection mirror and also changes a diameter of the aperture means.
    Type: Grant
    Filed: February 24, 1997
    Date of Patent: October 20, 1998
    Assignee: Mitsubishi Denki Kabushiki Kaisha
    Inventors: Satoshi Nishida, Shigeto Takeshima