Patents by Inventor Donovan D. Slatter

Donovan D. Slatter 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).

  • Sulphur and silicon control in ferrochromium production
    Patent number: 4971622
    Abstract: A method for sulphur and silicon control in the production of ferrochromium is characterized by controlling the reducing conditions in a melting furnace into which have been fed the highly pre-reduced products of a reduction smelter and by adjusting the CaO content of the final slag.
    Type: Grant
    Filed: January 4, 1989
    Date of Patent: November 20, 1990
    Assignee: Middelburg Steel and Alloys (Proprietary) Limited
    Inventor: Donovan D. Slatter