Patents by Inventor Hiroshi Sakaoka

Hiroshi Sakaoka 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).

  • Duplex multicolor printed cloth and method for the production of the same
    Patent number: 3948597
    Abstract: The opposite surfaces of a cloth are dyed with different dyes having different color tones, respectively. At least one of the opposite surfaces of the cloth is dyed by printing in a fine spot pattern and assumes a mixed multicolor fine spot dyed pattern in cooperation with the dyed color at the other surface which is penetrated or seen through the cloth.
    Type: Grant
    Filed: September 23, 1974
    Date of Patent: April 6, 1976
    Assignee: Hayashi Chemical Industry Co., Ltd.
    Inventor: Hiroshi Sakaoka