Patents by Inventor Masatake Niwa

Masatake Niwa 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 control system
    Patent number: 4089014
    Abstract: In a camera exposure control mechanism having auto-to-manual switching for diaphragm control and a mechanism for selecting different exposure modes, apparatus is provided for switching the diaphragm control to manual control with the selection of either bulb or flash exposure irrespective of the selection of the exposure mode. An interrupting mechanism interrupts the operation of an automatically operated diaphragm stopping-down device to enable manual diaphragm control or bulb exposure control. The interrupting means selects manual diaphragm control with manual selection of the bulb or the flash exposure setting irrespective of the setting of auto-to-manual switch setting.
    Type: Grant
    Filed: November 30, 1976
    Date of Patent: May 9, 1978
    Assignee: Minolta Camera Kabushiki Kaisha
    Inventors: Hiroshi Ueda, Masatake Niwa