Patents by Inventor Robert C. Sommer

Robert C. Sommer 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).

  • Radio receiver with audio selectivity
    Patent number: 4434508
    Abstract: A system is disclosed in which signals are presented to a listener with a spatial impression in which the signal which is desired appears to be coming from a source in front of the listener while other signals appear to be coming from audio sources to the right and left of the listener. The same is achieved through a combination of a heterodyne type detector and a combination of high pass and low pass filters receiving the output of the detector. The outputs of the high and low pass filters are separately amplified and each sent to one ear of the listener.
    Type: Grant
    Filed: November 3, 1981
    Date of Patent: February 28, 1984
    Assignee: American Systems Corporation
    Inventor: Robert C. Sommer