Patents by Inventor James J. Chopack

James J. Chopack 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).

  • Battery life extender with engine heat
    Patent number: 6172486
    Abstract: A lead acid battery life extender for the battery of an internal combustion engine includes a multivibrator circuit electrically connected across the terminals of the battery for delivering high frequency electrical pulses to the battery, thereby removing lead sulfate from the plates of the battery and increasing the life of the battery, and a thermoelectric power source for providing electrical energy to the multivibrator circuit, thermally coupled to heat emitted from the internal combustion engine and electrically connected to the multivibrator circuit.
    Type: Grant
    Filed: September 24, 1999
    Date of Patent: January 9, 2001
    Assignee: The United States of America as represented by the Secretary of the Army
    Inventors: Carl Campagnuolo, James J. Chopack, Jonathan E. Fine