Patents by Inventor James Herbert Downing

James Herbert Downing 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).

  • Method for making strontium additions to ferrosilicon
    Patent number: 4017310
    Abstract: Addition of strontium to silicon or ferrosilicon using a mixture containing carbon and at least one material selected from the group of strontium oxide, and strontium carbonate and strontium sulfate.
    Type: Grant
    Filed: December 31, 1975
    Date of Patent: April 12, 1977
    Assignee: Union Carbide Corporation
    Inventors: James Herbert Downing, James Enoch Wells, III