Patents by Inventor John J. Iredale

John J. Iredale 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).

  • Microphone apparatus for producing signals for surround reproduction
    Patent number: 6507659
    Abstract: A microphone apparatus or assembly includes three or more microphone elements supported on a horizontal plane or planes, which microphones are physically arranged and electrically combined such that the resulting composite stereo signals, left total and right total, produce a surround image and are compatible with current standard surround decoders.
    Type: Grant
    Filed: November 22, 2000
    Date of Patent: January 14, 2003
    Assignee: Cascade Audio, Inc.
    Inventors: John J. Iredale, Roger S. Keller