Patents by Inventor Andreas Siegmund

Andreas Siegmund 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).

  • Alloy and anode for use in the electrowinning of metals
    Patent number: 7704452
    Abstract: A lead calcium tin alloy to which cobalt has been added is described. The alloy is useful in the formation of anodes to be used in electrowinning cells. Electrowinning cells containing the cobalt alloys are particularly suited for electrowinning metals, such as copper, from sulfuric acid electrolytes. The cobalt-containing anodes improve the efficiency of oxygen evolution at the anode during electrowinning and reduce corrosion of the anode.
    Type: Grant
    Filed: February 23, 2006
    Date of Patent: April 27, 2010
    Assignee: RSR Technologies, Inc.
    Inventors: David R. Prengaman, Andreas Siegmund
  • Alloy and anode for use in the electrowinning of metals
    Publication number: 20070193879
    Abstract: A lead calcium tin alloy to which cobalt has been added is described. The alloy is useful in the formation of anodes to be used in electrowinning cells. Electrowinning cells containing the cobalt alloys are particularly suited for electrowinning metals, such as copper, from sulfuric acid electrolytes. The cobalt-containing anodes improve the efficiency of oxygen evolution at the anode during electrowinning and reduce corrosion of the anode.
    Type: Application
    Filed: February 23, 2006
    Publication date: August 23, 2007
    Inventors: David Prengaman, Andreas Siegmund
  • Method for enhancing lead oxidation during production of lead acid batteries
    Patent number: 6664003
    Abstract: In the manufacture of lead acid battery electrodes, the oxidation of lead, particularly recycled lead containing silver, is enhanced by addition of magnesium to the lead. During the production of the lead acid battery, at least about 0.001 weight percent of magnesium is formed into an alloy with lead. The resulting alloy is then subjected to oxidizing conditions. The alloy may further contain silver.
    Type: Grant
    Filed: February 6, 2001
    Date of Patent: December 16, 2003
    Assignee: RSR Technologies, Inc.
    Inventors: R. David Prengaman, Andreas Siegmund
  • Method for enhancing lead oxidation during production of lead acid batteries
    Publication number: 20020146364
    Abstract: In the manufacture of lead acid battery electrodes, the oxidation of lead, particularly recycled lead containing silver, is enhanced by addition of magnesium to the lead.
    Type: Application
    Filed: February 6, 2001
    Publication date: October 10, 2002
    Inventors: R. David Prengaman, Andreas Siegmund