Patents by Inventor John Tiffany

John Tiffany 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 with ultraviolet screening agent
    Patent number: 4872877
    Abstract: An ultraviolet screening agent can be incorporated into a preformed silicone rubber intraocular lens by bringing it into contact with a solution which contains the agent in a higher concentration than the lens material.
    Type: Grant
    Filed: March 17, 1987
    Date of Patent: October 10, 1989
    Assignee: Dennis T. Grendahl
    Inventor: John Tiffany