Patents by Inventor Walter G. Stierhoff, Jr.

Walter G. Stierhoff, Jr. 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).

  • Holograms exposed and processed on plastic substrates
    Patent number: 6710900
    Abstract: A holographic recording material coupled to a plastic substrate can be exposed to an interference pattern formed by at least one coherent light source, and subsequently processed, thereby eliminating the need to transfer the holographic recording material from a glass substrate to the plastic substrate. Additionally, by performing a post-exposure heating step in a liquid bath, the formation of unwanted bubbles between the plastic substrate and the holographic recording material is at least in part prevented.
    Type: Grant
    Filed: October 23, 2000
    Date of Patent: March 23, 2004
    Assignee: Zebra Imaging, Inc.
    Inventors: Michael A. Klug, Qiang Huang, Walter G. Stierhoff, Jr.