Patents by Inventor John Charles Stedman

John Charles Stedman 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).

  • Crosslinked polymers and refractive devices formed therefrom
    Patent number: 6767979
    Abstract: A polymer is formed of ethylenically unsaturated monomers including a zwitterionic monomer, an aromatic monomer and a cross-linking monomer. Preferably the crosslinking monomer includes at least one a group containing compound and at least one aliphatic group containing compound. The polymer is water-swellable and a hydrogen has optical and mechanical properties rendering it suitable for use as an intraocular refractive device such as an intraocular lens.
    Type: Grant
    Filed: September 20, 2001
    Date of Patent: July 27, 2004
    Assignee: Biocompatibles UK Limited
    Inventors: Andrew Victor Graham Muir, Lee Rowan, Stephen Alister Jones, John Charles Stedman