Patents by Inventor Mayumi Yoshimoto

Mayumi Yoshimoto 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).

  • Methods for the manufacture of cylindrical photosensitive resin structures and cylindrical printing plates
    Patent number: 4868090
    Abstract: A liquid photosensitive composition is introduced into a hollow cylindrical element and the latter is spun at a high speed to centrifugally deposit the liquid photosensitive composition uniformly on the inner surface of the hollow cylindrical element and cause the resin composition to cure in situ. The above process provides a seamless cylindrical photosensitive resin structure. After the centrifugal formation of a photosensitive resin layer on the inner surface of the hollow cylindrical element, the photosensitive resin may be back-exposed from within the hollow cylindrical element and relief-exposed from outside of the hollow cylindrical element though an image carrier.By the above method, resin plates and particularly those suited for flexographic printing can be manufactured, and using these resin plates, seamless image printing can be performed.
    Type: Grant
    Filed: April 22, 1987
    Date of Patent: September 19, 1989
    Assignee: Atsushi Kitamura
    Inventors: Atsushi Kitamura, Mayumi Yoshimoto