Patents by Inventor William F. Coombs

William F. Coombs 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).

  • Rotational molding of contact lenses
    Patent number: 4555372
    Abstract: A toric or bifocal contact lens comprising a central optic zone and a peripheral zone, said peripheral zone having affixed to its anterior surface a bead, said bead on at least a part of the upper half of said peripheral zone being tapered down from a sweeping arc which intersects with the bead on each side of the lens to the uppermost point on the periphery of the lens. The lens can be prepared by casting in a mold to obtain the desired anterior surface of the lens followed by lathe cutting the posterior surface.
    Type: Grant
    Filed: April 4, 1983
    Date of Patent: November 26, 1985
    Assignee: Bausch & Lomb Incorporated
    Inventors: Wilhelm F. Kunzler, William F. Coombs