Patents by Inventor David M. Wisdom

David M. Wisdom 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).

  • Binary lead-tin alloy substrate for lead-acid electrochemical cells
    Patent number: 5120620
    Abstract: A binary lead-tin alloy substrate for support of the electrochemically active material in lead-acid cells is disclosed having a tin concentration from about 0.3 to about 0.9 weight percent, the balance being lead. The tin impedes the formation of a passivation layer at the interface between the grid material and the active material improving cell recovery from deep discharge and improving cold cranking amperes performance.
    Type: Grant
    Filed: August 24, 1990
    Date of Patent: June 9, 1992
    Assignee: Gates Energy Products, Inc.
    Inventors: Robert F. Nelson, David M. Wisdom