Patents by Inventor Louis F. Siegel

Louis F. Siegel 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).

  • Two ply thermal paper and method of making
    Patent number: 4853256
    Abstract: A two-ply laminated record medium has a thermally reactive coating applied to the base sheet and the top sheet is applied to the base sheet by using a wet lamination process. The coating provides sufficient adhesion to prevent separation of the top sheet and the base sheet during printing, while allowing for ease of separation of the two sheets after printing.
    Type: Grant
    Filed: March 11, 1988
    Date of Patent: August 1, 1989
    Assignee: NCR Corporation
    Inventors: Thomas J. Obringer, Louis F. Siegel, Maurice W. Lewis