Patents by Inventor Dennis Mortensen

Dennis Mortensen 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).

  • MEMS backplate, MEMS microphone comprising a MEMS backplate and method for manufacturing a MEMS microphone
    Patent number: 9266713
    Abstract: A MEMS backplate enables MEMS microphones with reduced parasitic capacitance. The MEMS backplate includes a central area and a perforation in the central area. A suspension area surrounds the central area at least partially. An aperture is disposed in the suspension area.
    Type: Grant
    Filed: November 14, 2011
    Date of Patent: February 23, 2016
    Assignee: EPCOS AG
    Inventors: Leif Steen Johansen, Jan Tue Ravnkilde, Pirmin Hermann Otto Rombach, Kurt Rasmussen, Dennis Mortensen
  • Microphone and method to position a membrane between two backplates
    Patent number: 9197967
    Abstract: A microphone includes two backplates. A membrane is located between the two backplates. A voltage source applies a first bias voltage to the membrane and the first backplate and applies a second bias voltage to the membrane and the second backplate. A control unit adjusts the first and the second bias voltage. A method to center the membrane in a final electro-mechanic equilibrium position between the two backplates in a microphone is also disclosed.
    Type: Grant
    Filed: March 4, 2011
    Date of Patent: November 24, 2015
    Assignee: EPCOS AG
    Inventor: Dennis Mortensen
  • Flat back plate
    Patent number: 9181087
    Abstract: The present invention refers to a flat back plate, e.g. for MEMS capacitors e.g. for MEMS microphones. For that the back plate comprises a tensile element that exerts a horizontal tensile stress on its environment.
    Type: Grant
    Filed: March 2, 2011
    Date of Patent: November 10, 2015
    Assignee: Epcos AG
    Inventors: Dennis Mortensen, Pirmin Hermann Otto Rombach
  • MEMS BACKPLATE, MEMS MICROPHONE COMPRISING A MEMS BACKPLATE AND METHOD FOR MANUFACTURING A MEMS MICROPHONE
    Publication number: 20140346621
    Abstract: A MEMS backplate enables MEMS microphones with reduced parasitic capacitance. A MEMS backplate includes a central area and a perforation in the central area. A suspension area surrounds the central area at least partially. An aperture is disposed in the suspension area.
    Type: Application
    Filed: November 14, 2011
    Publication date: November 27, 2014
    Applicant: EPCOS AG
    Inventors: Leif Steen Johansen, Jan Tue Ravnkilde, Pirmin Hermann Otto Rombach, Kurt Rasmussen, Dennis Mortensen
  • Microphone and Method to Position a Membrane Between Two Backplates
    Publication number: 20140037121
    Abstract: A microphone includes two backplates. A membrane is located between the two backplates. A voltage source applies a first bias voltage to the membrane and the first backplate and applies a second bias voltage to the membrane and the second backplate. A control unit adjusts the first and the second bias voltage. A method to center the membrane in a final electro-mechanic equilibrium position between the two backplates in a microphone is also disclosed.
    Type: Application
    Filed: March 4, 2011
    Publication date: February 6, 2014
    Applicant: EPCOS AG
    Inventor: Dennis Mortensen
  • FLAT BACK PLATE
    Publication number: 20120225259
    Abstract: The present invention refers to a flat back plate, e.g. for MEMS capacitors e.g. for MEMS microphones. For that the back plate comprises a tensile element that exerts a horizontal tensile stress on its environment.
    Type: Application
    Filed: March 2, 2011
    Publication date: September 6, 2012
    Applicant: EPCOS AG
    Inventors: Dennis Mortensen, Pirmin Hermann Otto Rombach