Patents by Inventor David A. Fencil

David A. Fencil 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).

  • Intraocular lens and method for making same
    Patent number: 5147397
    Abstract: Disclosed is a method for producing an intraocular lens including an optic and at least one haptic. In one embodiment, the method comprises: exposing the lens bonding region of the haptic to a plasma at conditions effective to enhance the bondability of the lens bonding region to the optic; and bonding the exposed lens bonding region to an optic. The plasma exposed haptic may be coated with a material, e.g., to preserve the enhanced bondability property, prior to bonding the coated lens bonding portion to the optic. Intraocular lenses having enhanced haptic-optic bonding are also disclosed.
    Type: Grant
    Filed: July 3, 1990
    Date of Patent: September 15, 1992
    Assignee: Allergan, Inc.
    Inventors: F. Richard Christ, David A. Fencil, Patricia M. Knight
  • Intraocular lens with roughened fixation member
    Patent number: 5133746
    Abstract: An intraocular lens comprising at least one fixation member and an optic. The fixation member has an attachment region with a roughened outer surface. The attachment region is received within the optic to attach the fixation member to the optic. The roughened outer surface improves the adhesion of the fixation member to the optic.
    Type: Grant
    Filed: December 14, 1990
    Date of Patent: July 28, 1992
    Assignee: Allergan, Inc.
    Inventors: Daniel G. Brady, Stanley Van Gent, David A. Fencil