Patents by Inventor Itsuro Yonenaga

Itsuro Yonenaga 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: 5822899
    Abstract: An advertisement display device which can display a plurality of frames repeatedly one after another and which incurs less manufacturing and initial costs. By activating a motor, a rotary shaft is rotated. The rotary shaft in turn rotates upper and lower driven sprockets, which in turn upper and lower endless chains. An endless sheet stretched between the endless chains are thus rotated together with the chains. The endless sheet is several times longer than a display area defined in an outer case, and has a plurality of continuously arranged display frames each substantially as long as the display area. Each frame carries one kind of advertisement. By rotating the endless sheet, the ads on the respective frames can be repeatedly displayed one after another.
    Type: Grant
    Filed: August 4, 1997
    Date of Patent: October 20, 1998
    Inventor: Itsuro Yonenaga