Patents by Inventor Patrick H. Benz

Patrick H. Benz 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).

  • Contact lens having improved dimensional stability
    Patent number: 6011081
    Abstract: A contact lens and a contact lens blank having increased dimensional stability are constructed from a copolymer of 2,3-dihydroxypropyl methacrylate and 2-hydroxyethyl methacrylate, wherein the copolymer of 2,3-dihydroxypropyl methacrylate and 2-hydroxyethyl methacrylate has either an absolute water balance ratio greater than 8 or a relative water balance ratio greater than 2 relative to a polymer of 2-hydroxyethyl methacrylate.
    Type: Grant
    Filed: July 1, 1996
    Date of Patent: January 4, 2000
    Assignee: Benz Research and Development Corp.
    Inventors: Patrick H. Benz, Jose A. Ors
  • Terpolymer for contact lens
    Patent number: 5891932
    Abstract: An ionic contact lens made from a terpolymer of 2,3-dihydroxypropyl methacrylate, 2-hydroxyethyl methacrylate, and methacrylic acid. The contact lens has excellent properties including good strength and excellent water retention properties and excellent dimensional stability.
    Type: Grant
    Filed: November 24, 1997
    Date of Patent: April 6, 1999
    Assignee: Benz Research and Development Corporation
    Inventors: Patrick H. Benz, Jose A. Ors
  • Contact lens having improved dimensional stability
    Patent number: 5532289
    Abstract: A contact lens having increased dimensional stability is constructed from a copolymer of 2,3-methacrylate with 2-hydroxyethyl methacrylate.
    Type: Grant
    Filed: April 14, 1995
    Date of Patent: July 2, 1996
    Assignee: Benz Research and Development Corp.
    Inventors: Patrick H. Benz, Jose A. Ors
  • Lens alignment and positioning method and apparatus
    Patent number: 5080482
    Abstract: A method and apparatus for aligning and positioning a lens such that the optical and/or cylinder axis of the lens is precisely aligned with a fixture for the purpose of assembly or further mechanical operations such as machining and polishing. According to another aspect of the invention, the lens apex is precisely positioned a constant distance from a reference point. In order to implement the above, a method and apparatus is disclosed for optically aligning and positioning lenses using digitzed video imaging, an X-Y-Z micron stage and a microprocessor (or computer) capable of performing image analysis.
    Type: Grant
    Filed: May 29, 1990
    Date of Patent: January 14, 1992
    Assignee: Benz Research and Development Corporation
    Inventors: Patrick H. Benz, Andrew J. Eckles, IV, Peter B. Bumpus, Richard W. Adams, Stephen R. Grant