Patents by Inventor John David Frankland

John David Frankland 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).

  • Irradiation of hydrophilic and hydrophobic monomers to produce hydrophilic copolymers
    Patent number: 3943045
    Abstract: A hydrophilic polymer or copolymer is produced in an environment free from a chemical initiator and preferably by irradiation of the starting materials, particularly by gamma rays. The product polymer or copolymer is thus free from the residua of chemical initiators and the method permits the production of polymers and copolymers which are particularly suitable for use in contact with living tissue, for example as contact lenses, prosthetic devices, surgical implants, protective corneal fittings and protective membranes or bandages.
    Type: Grant
    Filed: March 12, 1973
    Date of Patent: March 9, 1976
    Assignee: Special Polymers Limited
    Inventors: Philip William Cordrey, John David Frankland, Donald James Highgate