Patents by Inventor Ronald A. Kaufman

Ronald A. Kaufman 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).

  • Auxiliary battery adapter for cellular telephones
    Patent number: 6710576
    Abstract: This invention is an adapter that fits on a cellular phone that allows a plurality of batteries to be connected in parallel. More specifically, this invention is an adapter that allows a standard cellular telephone battery to be fitted on a phone in the same fashion that an extended capacity or “aux” battery would. The adapter has an aperture for accommodating a battery, as well as electrical connections which couple the battery contacts to the phone's electrical contacts. An end user can use this invention to power a phone. Additionally the device can be used in conjunction with a battery charger to charge a spare battery.
    Type: Grant
    Filed: January 7, 2000
    Date of Patent: March 23, 2004
    Assignee: Motorola, Inc.
    Inventors: Ronald A. Kaufman, Elizabeth A. Bryant, Due Quoc Huynh