Patents by Inventor Paul R. Cotran

Paul R. Cotran 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).

  • Photokeratometric device
    Patent number: 4779973
    Abstract: A photokeratometric device for attachment to a photoslit lamp microscope having a light source therein comprises a keratometric pattern plate having an opening in the center thereof and a mount for supporting the plate for reproducing through the microscope an image of the cornea of a patient being examined with the keratometric pattern superimposed thereon.
    Type: Grant
    Filed: November 6, 1986
    Date of Patent: October 25, 1988
    Inventors: David Miller, Hiroyuki Ohtsuka, Hirofumi Matsuzawa, Paul R. Cotran