Patents by Inventor Charles Jeffrey McCrea

Charles Jeffrey McCrea 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).

  • Low melting temperature metal coating process, apparatus and product
    Patent number: 4097625
    Abstract: Substrate such as relatively porous, low thermally conductive materials are coated with molten lead, lead-base alloys, zinc, zinc-base alloys, tin, tin-base alloys, cadmium, cadmium-base alloys, aluminum, aluminum-base alloys and the like by spreading the molten metal by means of a low thermally conductive roll to provide products useful in sound attenuation, moisture and corrosion proofing and radiation shielding.
    Type: Grant
    Filed: June 17, 1977
    Date of Patent: June 27, 1978
    Assignee: St. Joe Minerals Corporation
    Inventors: Norman Laurence Lunn, Charles Jeffrey McCrea, Raymond David Pregaman, Lawrence Edward Turowski