Patents by Inventor Minoru Shiratori

Minoru Shiratori 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: 4212154
    Abstract: A time striking device for an electronic timepiece including a time striking signal detecting means coordinately arranged and installed in a time indicating gear train of an electronic timepiece and supplying a time striking signal prior to a striking time at every striking time, a reference zero second detecting means counting timepiece driving pulses and supplying a reference zero second signal, a coincidence circuit supplying a primary time striking direction signal by the coincidence of the outputs from these two detecting means, a frequency dividing circuit counting the timepiece driving pulses and sending out the secondary time striking direction signal at a desired time interval, a selecting circuit selectively supplying the primary time striking direction from the coincidence circuit and the secondary time striking direction signal from the frequency dividing circuit to a time striking section.
    Type: Grant
    Filed: April 17, 1979
    Date of Patent: July 15, 1980
    Assignee: Rhythm Watch Co. Ltd.
    Inventors: Katsuhiko Takebe, Masao Fukuda, Minoru Shiratori, Minosaku Aso