Patents by Inventor Kohtaroh Hiraba

Kohtaroh Hiraba 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).

  • Method of preparation of pattern designs for printing
    Patent number: 4462683
    Abstract: Disclosed is a method of the preparation of pattern designs for printing, in which a shadow of an opaque article having a specific shape and structure, which is interposed between two confronting polarizing plates, is utilized and a basic original photograph is prepared by superposing the shadow of the specific shape and structure integrally on an interference pattern.
    Type: Grant
    Filed: September 29, 1982
    Date of Patent: July 31, 1984
    Inventor: Kohtaroh Hiraba