Patents by Inventor Wayne Loeb

Wayne Loeb 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 digital-to-acoustic transducer with error cancellation
    Publication number: 20050013455
    Abstract: An acoustic transducer comprising a substrate; and a diaphragm formed by depositing a micromachined membrane onto the substrate. The diaphragm is formed as a single silicon chip using a CMOS MEMS (microelectromechanical systems) semiconductor fabrication process. The curling of the diaphragm during fabrication is reduced by depositing the micromachined membrane for the diaphragm in a serpentine-spring configuration with alternating longer and shorter arms. As a microspeaker, the acoustic transducer of the present invention converts a digital audio input signal directly into a sound wave, resulting in a very high quality sound reproduction at a lower cost of production in comparison to conventional acoustic transducers. The micromachined diaphragm may also be used in microphone applications.
    Type: Application
    Filed: February 18, 2004
    Publication date: January 20, 2005
    Inventors: Wayne Loeb, John Neumann, Kaigham Gabriel
  • MEMS digital-to-acoustic transducer with error cancellation
    Patent number: 6829131
    Abstract: An acoustic transducer comprising a substrate; and a diaphragm formed by depositing a micromachined membrane onto the substrate. The diaphragm is formed as a single silicon chip using a CMOS MEMS (microelectromechanical systems) semiconductor fabrication process. The curling of the diaphragm during fabrication is reduced by depositing the micromachined membrane for the diaphragm in a serpentine-spring configuration with alternating longer and shorter arms. As a microspeaker, the acoustic transducer of the present invention converts a digital audio input signal directly into a sound wave, resulting in a very high quality sound reproduction at a lower cost of production in comparison to conventional acoustic transducers. The micromachined diaphragm may also be used in microphone applications.
    Type: Grant
    Filed: September 13, 1999
    Date of Patent: December 7, 2004
    Assignee: Carnegie Mellon University
    Inventors: Wayne A. Loeb, John J. Neumann, Jr., Kaigham J. Gabriel