Patents by Inventor Gerhard Melcher

Gerhard Melcher 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 the thermal refinement of greatly contaminated copper in molten phase
    Patent number: 4073646
    Abstract: Method and apparatus for the thermal refinement of contaminated copper in the molten phase wherein superimposed molten phases are formed in a treating vessel, the lower being the copper bearing material and the upper phase containing slag, and reactive gases are simultaneously injected into each of the molten phases.
    Type: Grant
    Filed: May 13, 1976
    Date of Patent: February 14, 1978
    Assignee: Klockner-Humboldt-Deutz Aktiengesellschaft
    Inventors: Alfred Kryczun, Gerhard Melcher