Patents by Inventor Sadako Yoshioka

Sadako Yoshioka 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).

  • Picture post card
    Patent number: 5288011
    Abstract: A picture post card, which comprises a card body having one surface kept cleared and an opposite surface provided with an image; a translucent hard synthetic resin film laminated on one surface of the card body, enabled for entry of an address and message; and a transparent hard synthetic resin film laminated on said opposite surface of the card body for maintaining quality of the image.
    Type: Grant
    Filed: February 1, 1993
    Date of Patent: February 22, 1994
    Assignee: Hamada Shashin Kogeisha
    Inventor: Sadako Yoshioka