Patents by Inventor Andru J. A. Prescod

Andru J. A. Prescod 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).

  • Method and apparatus for measuring dimensional changes in transparent substrates
    Patent number: 7417748
    Abstract: A method of measuring dimensional changes in a transparent substrate includes forming an array of reference markers on a reference plate, forming an array of substrate markers on the transparent substrate, stacking the reference plate and transparent substrate such that the reference markers and substrate markers overlap, measuring coordinates of the substrate markers relative to coordinates of the reference markers before and after processing the transparent substrate, and determining dimensional changes in the transparent substrate from the difference between the measured relative coordinates of the substrate markers before and after processing the transparent substrate.
    Type: Grant
    Filed: April 28, 2005
    Date of Patent: August 26, 2008
    Assignee: Corning Incorporated
    Inventors: Richard L. Fox, Kiat C. Kang, Andru J. A. Prescod