Patents by Inventor James H. Amson

James H. Amson 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).

  • Converter and method for top blowing nonferrous metal
    Patent number: 5180423
    Abstract: The invention provides a converter for purifying molten nonferrous material. A converter body having a refractory lined chamber holds the nonferrous material. A gas injector means pierces a lower portion of the chamber for bottom sparging the nonferrous material. A lance pierces an upper portion of the converter body projecting minimally into the chamber for limited exposure to adverse conditions. While converting with top blowing of gas containing oxygen and bottom stirring solid nonferrous metal may be added to the converter to cool the molten nonferrous material and purified molten nonferrous metal.
    Type: Grant
    Filed: March 4, 1992
    Date of Patent: January 19, 1993
    Assignee: INCO Limited
    Inventors: Samuel W. Marcuson, Carlos A. Landolt, James H. Amson, Haydn Davies