Patents by Inventor John L. Staarman

John L. Staarman 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).

  • Over-discharge protection for rechargeable batteries
    Patent number: 5179337
    Abstract: Field-effect transistor coupled to conduct current from a rechargeable battery to a load so long as the voltage potential across the rechargeable battery is sufficient to turn on the field-effect transistor to prevent the rechargeable battery discharging below a predetermined value, thereby protecting the rechargeable battery from permanent damage from overdischarge.
    Type: Grant
    Filed: November 13, 1991
    Date of Patent: January 12, 1993
    Assignee: International Business Machines Corporation
    Inventors: John L. Staarman, Theodore B. Ziemkowski