Patents by Inventor Andrew J. J. Cowell

Andrew J. J. Cowell 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).

  • Grain refining metals
    Patent number: 4708739
    Abstract: The invention provides a grain refinement method for copper-based metals, which method can be applied to a range of different types of such metals.
    Type: Grant
    Filed: September 29, 1986
    Date of Patent: November 24, 1987
    Assignee: London & Scandinavian Metallurgical Co. Limited
    Inventors: James L. F. Kellie, Andrew J. J. Cowell