Patents by Inventor Arihiko Ikeda

Arihiko Ikeda 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).

  • Digital time display system
    Patent number: 4185452
    Abstract: A digital time display system in which one hour is represented by 10,000 times a time interval which is equal to 0.36 second in the currently prevailing clock time display system which is based on the scale of 60. Each time interval is effective to step a numeral on the clock time display.
    Type: Grant
    Filed: May 10, 1978
    Date of Patent: January 29, 1980
    Inventor: Arihiko Ikeda