Patents by Inventor Siegfried Ernst

Siegfried Ernst 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).

  • Electrode coated with lead or a lead alloy and method of use
    Patent number: 4459189
    Abstract: An electrode in particular an oxygen-evolving anode for metal electrowinning from an acid electrolyte comprises a body of aluminum or other metal coated with lead or a lead alloy by electroplating preferably from a non-aqueous electrolyte. The substrate can be a sheet of aluminium or compacted particles of aluminium plated with lead or a lead alloy. A sheet of lead or lead alloy is clad to the electroplated substrate and advantageously an electrocatalytic material such as surface-activated valve metal sponge is applied to the surface of the lead or lead alloy.
    Type: Grant
    Filed: February 16, 1983
    Date of Patent: July 10, 1984
    Inventors: Christopher J. Vance, Thinh Nguyen, Jean-Marie Fresnel, Henri B. Beer, Siegfried Ernst