Patents by Inventor Rainer Goldschmidt

Rainer Goldschmidt 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).

  • Hearing-aid with integrated circuit electronics
    Patent number: 4539441
    Abstract: A hearing-aid has an electronic voltage stabilizing circuit (16) to compensate for change in supply voltage due to battery (18) aging and use. The electret microphone (11) is located within a housing, the voltage stabilizing circuit (16) being located within the same microphone housing, thus requiring no additional space or terminal connections. Preferably, an impedance transformer is provided; the electronic components (31-34) are placed on the same semi-conductor chip as the components (35, 36) of the voltage stabilizing circuit.
    Type: Grant
    Filed: August 19, 1982
    Date of Patent: September 3, 1985
    Assignee: Robert Bosch GmbH
    Inventors: Albert Eggert, Rainer Goldschmidt