Patents by Inventor Robert D. Buffington

Robert D. Buffington 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 detecting and modifying peripheral curves and junction ridges in contact lenses
    Patent number: 4798460
    Abstract: Apparatus and method for detecting and modifying discontinuities on the ocular surface of a patient's contact lens by alternately observing the reflected image of one or more parallel opaque bands superimposed on an illuminated translucent background and modifying the ocular surface until the detected malformations are removed and the ocular surface conforms to the conjugate profile of the patient's corneal surface.
    Type: Grant
    Filed: November 7, 1986
    Date of Patent: January 17, 1989
    Inventors: Robert D. Buffington, Joseph Y. Lilley