Patents by Inventor Göran Ehrlund

Göran Ehrlund 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).

  • Patent number: 8891345
    Abstract: A condenser microphone element is disclosed with an electrically conducting transducer membrane having an acoustically active area arranged to receive sound waves and to vibrate in response to the sound waves. The membrane is arranged in parallel with and at a distance from a back plate, which is formed from a non-conductive base. The base is provided with a conductive layer. The conductive layer has an active area that is arranged opposite the acoustically active area of the membrane and has a shape that faces the acoustically active area, and is delimited by an area where no conductive layer is provided. A microphone including the condenser element and a method of producing the microphone element are also provided.
    Type: Grant
    Filed: November 10, 2010
    Date of Patent: November 18, 2014
    Inventor: Göran Ehrlund
  • Publication number: 20120230523
    Abstract: The invention relates to a condenser microphone element (10) with an electrically conducting transducer membrane (15) having an acoustically active area (20) that is arranged to receive sound waves and to vibrate in response to said sound waves, wherein the membrane (15) is arranged in parallel with and at a distance from a back plate (60), which is formed from a non conductive base (61), which is provided with a conductive layer (65). The conductive layer has an active area (66) that is arranged opposite the acoustically active area (20) of the membrane (15) and has a shape that faces said acoustically active area (20), and is delimited by an area where no conductive layer is provided. The invention further relates to a microphone and to a method of producing the microphone element (10).
    Type: Application
    Filed: November 10, 2010
    Publication date: September 13, 2012
    Inventor: Göran Ehrlund
  • Patent number: 8155354
    Abstract: A condenser microphone capsule is described. The condenser microphone capsule (10) has an electrically conducting transducer membrane (15) arranged in parallel with and at a distance from an electrically conducting electrode surface (26) wherein the active area (20) of the transducer membrane has an essentially triangular shape. The microphone capsule may comprise a lid (50) with a membrane opening (55) that defines the shape of the active area (20) of the transducer membrane (15).
    Type: Grant
    Filed: June 30, 2006
    Date of Patent: April 10, 2012
    Inventor: Göran Ehrlund