Patents by Inventor Bruce A. Tunberg

Bruce A. Tunberg 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).

  • Method of making an intraocular lens with fracture resistant haptics
    Patent number: 5895610
    Abstract: The polymethyl methacrylate (PMMA) or copolymer thereof used to produce one-piece intraocular lenses is modified by a compression molding process to produce a much tougher material with improved mechanical properties. The process takes material in rod form and compresses into lens blanks. The molded lens blanks receive little or no compression strain in the center 4 mm optic zone. The compression is limited to the periphery region outside the center 4 mm zone. The intraocular lens fabricated from the molded lens blank exhibits greatly increased haptic mechanical properties and resistance to breakage.
    Type: Grant
    Filed: September 30, 1997
    Date of Patent: April 20, 1999
    Assignee: Iolab Corporation
    Inventors: Shiao H. Chang, Charles H. Sherwood, Bruce A. Tunberg, Paul D. Rice, Walker L. Gordy
  • Intraocular lens with fracture resistant haptics
    Patent number: 5674284
    Abstract: The polymethyl methacrylate (PMMA) or copolymer thereof used to produce one-piece intraocular lenses is modified by a compression molding process to produce a much tougher material with improved mechanical properties. The process takes material in rod form and compresses into lens blanks. The molded lens blanks receive little or no compression strain in the center 4 mm optic zone. The compression is limited to the periphery region outside the center 4 mm zone. The intraocular lens fabricated from the molded lens blank exhibits greatly increased haptic mechanical properties and resistance to breakage.
    Type: Grant
    Filed: February 26, 1996
    Date of Patent: October 7, 1997
    Assignee: Iolab Corporation
    Inventors: Shiao H. Chang, Charles H. Sherwood, Bruce A. Tunberg, Paul D. Rice, Walker L. Gordy
  • Cuvette
    Patent number: D302299
    Type: Grant
    Filed: December 31, 1986
    Date of Patent: July 18, 1989
    Assignee: Baxter Travenol Laboratories, Inc.
    Inventors: Warren M. Long, Maurice N. Karkar, Bruce A. Tunberg