Patents by Inventor Mitsuo Miyaji

Mitsuo Miyaji 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).

  • Light-reflectivity controller for use with automotive rearview mirror using electrochromic element
    Patent number: 4896030
    Abstract: The light reflectivity control for use with an automotive rearview mirror according to the present invention has a first and second photosensors to detect the brightness of the surroundings including the front of a car in which the inside rearview mirror is equipped and that of the surroundings including the rear of the car, respectively. These photosensors deliver output signals in inverse proportion to the respective brightnesses of the surroundings of the car. The output signals are supplied to a first and second comparators each having at least a reference value predetermined correspondingly to the brightness of the surroundings, in which the output signals are compared with the reference values, respectively. Based on the signal including the information concerning the brightness of the surroundings including the front and rear, respectively, of the car and that are delivered from the comparators, voltages for application to the electrochromic elements and then the electrochromic elements are connected.
    Type: Grant
    Filed: February 29, 1988
    Date of Patent: January 23, 1990
    Assignee: Ichikoh Industries Limited
    Inventor: Mitsuo Miyaji