Patents by Inventor Alan D. Stacy

Alan D. Stacy 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).

  • Process for desulfurization of ferrous metal melts
    Patent number: 4600434
    Abstract: A process for magnesium desulfurization of ferrous metal melts in a vessel comprising the provision of a fluid, high sulfur capacity slag wherein the weight ratio of slag constituents associated with sulfur to slag constituents associated with oxygen is greater than 0.8, followed by addition of magnesium to the melt in an amount sufficient to combine with the sulfur in the melt, transfer to the sulfur removed by the magnesium addition to the slag, and retention of the removed sulfur in the slag, thereby improving magnesium desulfurization efficiency and substantially eliminating sulfur reversion from the slag back to the melt.
    Type: Grant
    Filed: July 24, 1985
    Date of Patent: July 15, 1986
    Assignee: Armco Inc.
    Inventors: David L. Kleimeyer, Larry N. Fletcher, Alan D. Stacy, Allan M. Smillie