Patents by Inventor John H. Courtenay

John H. Courtenay 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).

  • Fluxes for casing metals
    Patent number: 4561912
    Abstract: Fluxes for use in the casting of metals e.g. steel comprise granules containing carbonaceous powder in which the proportion of carbonaceous powder in the surface of the granules is greater than the overall proportion of carbonaceous powder in the granules. The fluxes are particularly suitable for use in the continuous casting of steel.
    Type: Grant
    Filed: September 7, 1984
    Date of Patent: December 31, 1985
    Assignee: Foseco International Limited
    Inventors: John H. Courtenay, Royston J. Phillips