Patents by Inventor Lenard F. Sylvester

Lenard F. Sylvester 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).

  • Cell design for spirally wound rechargeable alkaline metal cell
    Patent number: 4863815
    Abstract: A rechargeable electrochemical cell having a cell casing housing a stack of spirally wound elements which include an alkaline metal anode, a cathode or cathode collector and a separator. A method is provided for preventing alkaline metal dendrites from forming on any surface within the cell casing and external to the stack of spirally wound elements.
    Type: Grant
    Filed: June 6, 1988
    Date of Patent: September 5, 1989
    Assignee: Altus Corporation
    Inventors: On-Kok Chang, John C. Hall, Jeffrey Phillips, Lenard F. Sylvester