Patents by Inventor Kuo H. Chang

Kuo H. Chang 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).

  • Technique of introducing an interface layer in a thermoplastic photoconductor medium
    Patent number: 4358519
    Abstract: This invention pertains to an improved technique of introducing an added insulative layer between the thermoplastic layer and the photoconductive layer of the thermoplastic photoconductive holographic recording medium. The added layer (pure PVK) is electrically insulating at temperatures used for thermal development to prevent decaying charge contrast during hologram development.
    Type: Grant
    Filed: December 5, 1977
    Date of Patent: November 9, 1982
    Assignee: Honeywell Inc.
    Inventors: Kuo H. Chang, Tzuo-Chang Lee, Jacob W. Lin