Patents by Inventor Frederick A. Kulik

Frederick A. Kulik 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 with electrochemical tester
    Patent number: 5250905
    Abstract: An electrochemical cell is provided with an integrally related state of charge indicator comprising an electrochemically generated display. The state of charge indicator comprises two electrical contacts and an electrochemically generated display connected therebetween. The display comprises an electrochemical cell that is permanently connected to the cell in a parallel configuration via the contacts. The condition of the cell is thus continuously displayed.
    Type: Grant
    Filed: September 24, 1991
    Date of Patent: October 5, 1993
    Assignee: Duracell Inc.
    Inventors: Han C. Kuo, Ignacio Chi, Frederick A. Kulik