Patents by Inventor William John McCartney

William John McCartney 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).

  • Emergency power supply for cellular telephone
    Patent number: 6636751
    Abstract: An electrochemical emergency power supply for a cellular telephone otherwise having a main battery. The emergency power supply, once activated, provides the cellular telephone with power for operation of the cellular telephone for at least a predetermined duration. The emergency power supply is an emergency cell that is selectively activated by the cellular telephone user, preferably through the exposure of the emergency cell to ambient air, when needed. The preferred emergency cell is an oxidizing zinc-air electrochemical cell that is held in a hermetically-sealed compartment which is selectively unsealed to activate the emergency power supply.
    Type: Grant
    Filed: November 23, 2000
    Date of Patent: October 21, 2003
    Inventor: William John McCartney