Patents by Inventor John L. Ham

John L. Ham 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).

  • Leech alloying
    Patent number: 3933474
    Abstract: Alloys are produced from an elongated metal bar comprising a substantially pure majority metal by attaching a length series of surface patches thereto made of compacted powder mixtures of minority alloying elements and the majority metal, then progressively melting the bar along its length to produce a compositionally uniform alloy melt and solidifying the melt to produce an alloy ingot. The process results in ingots of uniform composition consistent with use of relatively volatile minority alloying elements.
    Type: Grant
    Filed: March 27, 1974
    Date of Patent: January 20, 1976
    Assignee: Norton Company
    Inventors: John L. Ham, John G. Gorsuch