Patents by Inventor Frank Hardwick

Frank Hardwick 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).

  • Phenol formaldehyde resins, their manufacture and use
    Patent number: 4132699
    Abstract: Low molecular weight liquid phenol formaldehyde resins and processes for producing them are described. Preferred products are used as foundry binders and are made by forming a low molecular weight liquid novolak, removing free phenol while retaining a low molecular weight, and reacting with additional formaldehyde in the presence of an alkaline catalyst under conditions that yield a low molecular weight.
    Type: Grant
    Filed: January 24, 1977
    Date of Patent: January 2, 1979
    Assignee: British Steel Corporation (Chemicals) Ltd.
    Inventors: Richard N. Bannister, Frank Hardwick