Patents by Inventor Alan C. Richards

Alan C. Richards 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).

  • Novolak resins containing lactose and/or galactose
    Patent number: 4239665
    Abstract: Resins for use in making resin-coated granules are made by preparing a novolak resin from a phenol and formaldehyde in the presence of lactose and/or galactose, using an acid catalyst. Melt-coating the resin with an amine curing agent on to particulate refractory material gives resin-coated granules which can be moulded to make foundry moulds. The lactose and/or galactose can replace part of the phenol conventionally employed in preparing novolak resins and avoids the need for plasticizers.
    Type: Grant
    Filed: May 30, 1979
    Date of Patent: December 16, 1980
    Assignee: Talres Development (N.A.) N.V.
    Inventors: Alan C. Richards, Riaz A. Khan