Patents by Inventor Toyoharu Mizoguchi

Toyoharu Mizoguchi 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).

  • Concave reflecting mirror for a light source
    Patent number: 6102555
    Abstract: An improved reflective mirror for floodlights that can diffuse and reflect a beam of light from a light source in uniform brightness in a given floodlight area is provided. A concave reflecting mirror is provided with an aperture at the axis center of the mirror for inserting a light source such as a bulb, so that the inner periphery of the reflecting mirror is on the side and behind the light source. A plurality of reflectors are formed in the inner periphery of the reflecting mirror in a spiral profile when viewed from the front. The reflectors spiral out from the axis center of the reflecting mirror. Each of the reflectors has a convex or concave profile surface, so that a cross section of the reflective mirror inner periphery surface appears to be ribbed.
    Type: Grant
    Filed: February 6, 1998
    Date of Patent: August 15, 2000
    Inventor: Toyoharu Mizoguchi