Patents by Inventor Judith G. Duncan

Judith G. Duncan 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).

  • Apparatus for forming a plurality of subimages having different characteristics
    Patent number: 6215597
    Abstract: Apparatus for forming multiple subimages including an image forming lens, a color separating prism, subimage receptors for receiving subimages from the prism, and lenses compensating for spherical aberrations caused by the prism and controlling the size of the subimages reaching the subimage receptors. Other features include structure for dissipating heat from the subimage receptors and from circuit boards associated with the subimage receptors.
    Type: Grant
    Filed: November 17, 1999
    Date of Patent: April 10, 2001
    Assignee: Duncan Technologies, Inc.
    Inventors: David B. Duncan, Gregory J. Leeson, Judith G. Duncan