Patents by Inventor Keno Okuno

Keno Okuno 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).

  • Exposure propriety indicating device for flash-photography
    Patent number: 4096498
    Abstract: An exposure propriety indicating device for flash-photography constructed with a circuit comprising a film sensitivity signal generating circuit, an aperture value signal generating circuit, a comparison circuit for comparing signals generated by the two generating circuits, and an indicator circuit for indicating the result of such comparison.
    Type: Grant
    Filed: March 30, 1976
    Date of Patent: June 20, 1978
    Assignee: Nippon Kogaku K.K.
    Inventors: Keno Okuno, Masumi Osumi
  • Electronic flashlight system for cameras
    Patent number: 3971050
    Abstract: An electronic flashlight may be removably assembled to a camera. The camera is provided with a mounting member, an indicator lamp for indicating the readiness of the electronic flashlight for flashing, and contact means connected with the indicator lamp. The electronic flashlight is provided with a mounting member for engagement with the mounting member of the camera removably to secure the flashlight to the camera, and contact means. The contact means of the camera and the contact means of the flashlight may automatically be connected together upon assemblage of the flashlight to the camera electrically to connect the indicator lamp with the flashlight. The indicator lamp is located for observation through the viewfinder of the camera.
    Type: Grant
    Filed: July 24, 1974
    Date of Patent: July 20, 1976
    Assignee: Nippon Kogaku K.K.
    Inventors: Keno Okuno, Kouichi Takahata