Patents by Inventor Geoffrey Willison

Geoffrey Willison 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).

  • Bead polymerization process
    Patent number: 4363888
    Abstract: A process for the preparation of rigid beads, of cross-linked polyester resin which beads may be solid or vesiculated, by forming an oil-in-water or a water-in-oil-in-water emulsion in which the oil phase contains an unsaturated polyester resin and an unsaturated organic monomer to provide said cross-linking and thereafter heating the emulsion to a temperature of at least 45.degree. C. before initiating polymerization of the oil phase by the introduction into the system of a polymerization initiator, and promoter system, if the latter is not already present in the emulsion.
    Type: Grant
    Filed: April 24, 1981
    Date of Patent: December 14, 1982
    Assignee: Tioxide Group Limited
    Inventors: Geoffrey Willison, John C. W. Hodge