Patents by Inventor Steven Robert Mackara

Steven Robert Mackara 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 Multicolor optical elements for use in liquid crystal displays and methods of making the elements
    Patent number: 5930011
    Abstract: The present invention relates to holographic multicolor optical elements for use as multicolor filters in liquid crystal displays and methods of making the elements. The elements can be used as multicolor reflective or transmission filters The elements can have one, two, three or more holographic recording film layers Each layer comprises at least first and second pixel volumes containing holographic mirrors and preferably third pixel volumes containing a holographic mirror.
    Type: Grant
    Filed: September 17, 1996
    Date of Patent: July 27, 1999
    Assignee: E. I. du Pont de Nemours and Company
    Inventors: William John Gambogi, Jr., Steven Robert Mackara, Paul James Martin, Andrew Michael Weber, Torence John Trout