Patents by Inventor Leon E. Kawacz

Leon E. Kawacz 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).

  • Holographic display module for displaying machine status
    Patent number: 4896929
    Abstract: A holographic display module is incorporated into a machine with independently operating subsystems, and used to provide an indication of the status or location of the machine subsystems. In one embodiment, a xerographic copier incorporates a holographic display incorporating an outline of the machine. A liquid crystal panel is aligned with the holographic display and selectively addressed in conjunction with signals from the copier subsystems. An illumination subsystem is optimized to provide diffuse illumination of the display.
    Type: Grant
    Filed: July 15, 1988
    Date of Patent: January 30, 1990
    Assignee: Xerox Corporation
    Inventors: Werner E. Haas, John R. Andrews, Kirk A. Blakesley, John L. Havranek, Leon E. Kawacz, Raymond P. Mileski, Michael D. Rainsdon, Andrew P. Yesul, Jr., George A. Muller