Patents by Inventor Fredrick Fritz

Fredrick Fritz 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).

  • Disposable hearing aid with integral power source
    Patent number: 6473511
    Abstract: A hearing aid includes a microphone, signal processing circuitry, receiver and integral battery all mounted in a casing. The battery may be a metal-air device. The battery may be activated by removing a tape which blocks air holes on the battery or, if the battery is sealed into the hearing aid, air-vent holes on the hearing aid. The hearing aid may also include an air-blocking mechanism which is activated when the hearing aid is inserted in the user's ear and deactivated when the hearing aid is removed. The assembled hearing aid may also be packaged in non-permeable packaging material to extinguish battery activity. The hearing aid may also include an electronic switch which monitors the battery potential to disconnect the battery from the hearing aid electronics when the battery is deprived of oxygen and which connects the battery to the electronics when oxygen is provided to the battery.
    Type: Grant
    Filed: March 5, 1999
    Date of Patent: October 29, 2002
    Assignee: Sarnoff Corporation
    Inventors: John Gregory Aceti, Walter Paul Sjursen, Marvin Allan Leedom, Derek Mahoney, Fredrick Fritz