Patents by Inventor Geoffrey J. Lewis

Geoffrey J. Lewis 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).

  • Method of treating timber with composition having a colloidal pigment
    Patent number: 4142009
    Abstract: An agent for stabilization of a decorative finish is incorporated in a timber preservative composition comprising a preservative e.g. fungicide, insecticide or fire retardant in an organic solvent e.g. white spirit, chlorinated hydrocarbon such as methylene chloride or a liquified butane or propane for use in a double vacuum treatment of the timber. The agent may be an alkyd resin or colloidal pigment of a defined mean particle size, or both.
    Type: Grant
    Filed: May 24, 1977
    Date of Patent: February 27, 1979
    Assignee: Fosroc International Limited
    Inventors: Colin T. Kyte, Geoffrey J. Lewis, Edgar Pearce, Keith Hume