Patents by Inventor Hong-Zhang Cai

Hong-Zhang Cai 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).

  • Cylindrical all around stereophotograph (photo-statue) and a cylindrical continuous photography with lenticule and its equipment
    Patent number: 4825234
    Abstract: The present invention relates to stereophotography for a cylindrical all around stereophotograph, lenticular cylindrical continuous photography, and associated apparatus. A new type of cylindrical negative film stand is to be used in connection with a new lenticular image formation continuous displacement photographing method. A stereophotograph on which a stereo-image may be sighted at any angle of the object being photographed is obtainable. The method is also capable of use to record a change in scenery on a negative film during a time duration.
    Type: Grant
    Filed: April 30, 1986
    Date of Patent: April 25, 1989
    Inventor: Hong-Zhang Cai