Patents by Inventor Barry T. Egan

Barry T. Egan 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).

  • Spider-web placido pattern
    Patent number: 6834959
    Abstract: A placido pattern 10 for use in obtaining a topography of an eye, includes a series of spaced arcuate segments 12 centered about a central point 14 and a series of spaced radial lines 16 emanating from the central point 14. Each pair of adjacent radial lines 16 defines a boundary of a portion of the arcuate segments 12.
    Type: Grant
    Filed: September 30, 2002
    Date of Patent: December 28, 2004
    Assignee: Bausch & Lomb Incorporated
    Inventors: Gregg D. Niven, Joseph R. Bentley, Barry T. Egan, Lloyd Caldwell, Lloyd Allred