Patents by Inventor Stephen A. Bartfay

Stephen A. Bartfay 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).

  • Abbe refractometer
    Patent number: 4188116
    Abstract: A follower mechanism is used to determine the precise location of a moveable mirror in an Abbe Refractometer to provide the necessary information for converting mirror position to index of refraction. The mechanism is particularly suitable for conversion and readout by electronic means.
    Type: Grant
    Filed: February 21, 1978
    Date of Patent: February 12, 1980
    Assignee: American Optical Corporation
    Inventor: Stephen A. Bartfay-Szabo
  • Tissue embedder
    Patent number: D280662
    Type: Grant
    Filed: January 5, 1983
    Date of Patent: September 17, 1985
    Inventors: Stephen A. Bartfay, Raymond J. Buczynski