Patents by Inventor Geoffrey Wickham

Geoffrey Wickham 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).

  • Modifying the surface of polymer substrates by graft polymerization
    Patent number: 7144979
    Abstract: The present invention relates generally to a grafting process comprising the formation of a grafted polymeric structure having a substrate polymer in hybrid formation with one or more of the same or other polymers or monomeric subunits thereof. More particularly, the present invention contemplates a method of generating a homogenous or heterogenous grafted polymer by inducing or otherwise facilitating free radical formation to initiate polymerization of monomer units corresponding to the same or different polymers to a substrate polymer previously subjected to physical stress means. The resulting hybrid polymer may comprise a substrate polymer and a population of a second or further polymers in homogenous or heterogenous hybrid formation with the substrate polymer. A homogenous population includes a grafted population of the same polymer whereas a heterogenous population comprises a grafted population of two or more different polymers.
    Type: Grant
    Filed: December 19, 2001
    Date of Patent: December 5, 2006
    Assignee: Bio-Layer Pty. Limited
    Inventors: Nobuyoshi Joe Maeji, Geoffrey Wickham, Firas Rasoul
  • Modifying the surface of polymer substrates by graft polymerisation
    Publication number: 20040220349
    Abstract: The present invention relates generally to a grafting process comprising the formation of a grafted polymeric structure having a substrate polymer in hybrid formation with one or more of the same or other polymers or monomeric subunits thereof. More particularly, the present invention contemplates a method of generating a homogenous or heterogenous grafted polymer by inducing or otherwise facilitating free radical formation to initiate polymerization of monomer units corresponding to the same or different polymers to a substrate polymer previously subjected to physical stress means. The resulting hybrid polymer may comprise a substrate polymer and a population of a second or further polymers in homogenous or heterogenous hybrid formation with the substrate polymer. A homogenous population includes a grafted population of the same polymer whereas a heterogenous population comprises a grafted population of two or more different polymers.
    Type: Application
    Filed: October 28, 2003
    Publication date: November 4, 2004
    Inventors: Nobuyoshi Joe Maeji, Geoffrey Wickham, Firas Rasoul