Patents by Inventor Geoffrey W. Westwood

Geoffrey W. Westwood 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).

  • Preparation of foundry molds or cores
    Patent number: 4848443
    Abstract: Foundry molds and cores are prepared by using as a binder a phenolic resin in solution in aqueous sodium hydroxide and using an ester to cure the binder. The ester may be incorporated in the mixture prior to shaping, or the ester in gaseous form may be passed through the shaped mixture.
    Type: Grant
    Filed: July 27, 1987
    Date of Patent: July 18, 1989
    Assignee: Hepworth Minerals and Chemicals, Limited
    Inventors: Geoffrey W. Westwood, Raymond A. Higgins