Patents by Inventor Thomas J. Mestrits

Thomas J. Mestrits 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).

  • Bifocal contact lens
    Patent number: 4618229
    Abstract: A ballasted multifocal contact lens has a vent for releasing constrictive pressure provided in its lower and ballasted portion. The vent has a surface which tapers from the anterior surface toward the posterior surface to allow the lens to be positioned below the inferior lid. A stabilizing portion is formed on the lens adjacent each side of the vent. The stabilizing portions engage the inferior lid and adjust the lens should it be rotated off axis.
    Type: Grant
    Filed: July 22, 1983
    Date of Patent: October 21, 1986
    Assignee: Bausch & Lomb Incorporated
    Inventors: Benjamin L. Jacobstein, Thomas J. Mestrits, Murray Miller