Patents by Inventor Janet M. Schaffner

Janet M. Schaffner 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).

  • Patent number: 6066594
    Abstract: An over-the-counter type identification document is prepared by forming at least one first indicium (typically invariant data common to a large number of identification documents) on a core layer, sandwiching this core layer between a pair of substantially transparent polymer layers, providing an image-receiving layer on one or both outer surfaces of the resulting sandwich, forming a second indicium (typically variable data relating only to a single identification document) on the image-receiving layer(s) and laminating a protective layer or layers over the image-receiving layer(s). The identification document displays improved durability and security and can be rendered substantially identical in appearance to documents produced by known central issue production methods.
    Type: Grant
    Filed: September 18, 1998
    Date of Patent: May 23, 2000
    Assignee: Polaroid Corporation
    Inventors: Valerie E. Gunn, Janet M. Schaffner