Patents by Inventor Sadao Kawade

Sadao Kawade 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).

  • Patent number: 4025902
    Abstract: A general purpose sequence controller wherein a schematic electric circuit diagram comprising a ladder network of circuit lines disposed between two vertical bus lines is changeable and simulated by a special purpose control program. A logic operation circuit comprises first and second circuit means for examining an external input signal in accordance with examine commands of logical AND and OR functions, respectively, first and second memory means for temporarily memorizing the examined results of the first and second circuit means, respectively, third memory means for temporarily memorizing the application of the examine command of the logical OR function, and identifying circuit means for identifying the examined results of the logic operations in accordance with the contents of the first, second and third memory means.
    Type: Grant
    Filed: June 13, 1974
    Date of Patent: May 24, 1977
    Assignee: Toyoda Koki Kabushiki Kaisha
    Inventors: Hisaji Nakao, Katutoshi Naruse, Kazuhiko Hasegawa, Sadao Kawade, Yasufumi Tokura, Kazuo Matsuno