Patents by Inventor Dwaine W. Schoppe

Dwaine W. Schoppe 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).

  • Electrolytic process for producing neodymium metal or neodymium metal alloys
    Patent number: 5118396
    Abstract: A process based on molten salt electrolysis for producing pure rare earth metals is disclosed. This process is the direct electrolytic deposition of a rare earth metal such as neodymium, from a molten salt cell containing a mixture of electrolytes and a salt of neodymium, onto a liquid magnesium cathode forming an intermediate alloy. The intermediate alloy is distilled to isolate the neodymium metal. Also disclosed is a process for producing a pure neodymium/iron alloy wherein pure iron is added to the intermediate neodymium/magnesium alloy during the distillation step.
    Type: Grant
    Filed: June 9, 1989
    Date of Patent: June 2, 1992
    Assignee: The Dow Chemical Company
    Inventors: Kenneth G. Claus, Dwaine W. Schoppe, Matthew R. Earlam
  • Process for producing a reactive metal-magnesium alloy
    Patent number: 5024737
    Abstract: A process for producing a magnesium-reactive metal alloy, for example a calcium-magnesium alloy, by electrodepositing the reactive metal from a molten salt bath containing a chloride of said reactive metal directly into a molten pool of magnesium.
    Type: Grant
    Filed: June 9, 1989
    Date of Patent: June 18, 1991
    Assignee: The Dow Chemical Company
    Inventors: Kenneth G. Claus, Dwaine W. Schoppe, Matthew R. Earlam