Patents by Inventor Joseph A. Beni

Joseph A. Beni 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 surface flatness
    Patent number: 5153844
    Abstract: This invention relates to a method and apparatus for determining the flatness or planarity of a surface and, specifically, to a method and apparatus for determining the flatness or planarity of a surface using a computerized optics technique.
    Type: Grant
    Filed: January 23, 1990
    Date of Patent: October 6, 1992
    Assignee: E. I. Du Pont de Nemours and Company
    Inventors: Joseph A. Beni, Michael J. Merrill, Arun Prakash, John Taylor