Patents by Inventor John Y. Hur

John Y. Hur 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).

  • Erasable intermediate diazo-type paper
    Patent number: 4374190
    Abstract: A non-crinkling, wrinkling or curling erasable diazo-type intermediate material comprising a flexible light transmitting substrate, a flexible barrier layer on the substrate comprising an aliphatic organic alcohol insoluble elastomeric or thermoplastic material coated on the substrate in a non-aqueous medium and dried, and a photosensitive layer overlaying the barrier layer comprising an aliphatic alcohol soluble polymer resin binder, a diazo dye and an azo coupler, the photosensitive composition being dissolved in a non-aqueous solvent, coated and dried.
    Type: Grant
    Filed: May 21, 1981
    Date of Patent: February 15, 1983
    Assignee: AM International, Inc.
    Inventor: John Y. Hur