Patents by Inventor Stephen John Bull

Stephen John Bull 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).

  • Surface treatment of plastics films
    Patent number: 6096439
    Abstract: An improved polymer film material for the packaging of perishable foodstuffs, wherein the surface structure of the polymer is altered by means of an ion bombardment process so as to reduce the rates of transport of oxygen and water vapor through the polymer material wherein the polymer film material is produced by subjecting at least one surface of the film to ion bombardment with ions selected from the group consisting of hydrogen, carbon, nitrogen, helium, and argon at energies of 30-80 KeV and ion doses in the range of 10.sup.12 to 10.sup.18 ions/cm.sup.2.
    Type: Grant
    Filed: May 31, 1995
    Date of Patent: August 1, 2000
    Assignee: AEA Technology PLC
    Inventors: Stephen John Bull, Adrian Michael Jones, Andrew Robert McCabe