Patents by Inventor Charles Karatzas

Charles Karatzas 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 and method for reproducing a pattern in an annular area
    Patent number: 4933714
    Abstract: A master disk is positioned such that a radial portion thereof is within a restricted field having good imagery of an optical projection system. A second blank disk is positioned such that the image location extends along a radial portion thereof. As the two disks are rotated synchronously a pattern in an annular area is formed on the blank disk replicating the master. Good imagery of the pattern is obtained with a simple system having an image field less than the size of the object being reproduced.
    Type: Grant
    Filed: June 20, 1989
    Date of Patent: June 12, 1990
    Assignee: The Perkin-Elmer Corporation
    Inventors: Jere D. Buckley, Daniel N. Galburt, Charles Karatzas, Harry Sewell, Frits Zernike