Patents by Inventor Richard Vandersteen

Richard Vandersteen 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).

  • Composite loudspeaker cone
    Patent number: 8320604
    Abstract: Composite loudspeaker cones that include an interstitial layer of material having a core density below 600 kg/m3 and a Young's modulus greater than 0.2 GPa, such as balsa wood, interposed between a first carbon fiber layer and a second carbon fiber layer and method of making same.
    Type: Grant
    Filed: April 23, 2008
    Date of Patent: November 27, 2012
    Inventors: Richard Vandersteen, Michael P. Latvis, Jr.
  • Apparatus and methods for dielectric bias system
    Patent number: 7872195
    Abstract: Methods and apparatus of connecting and communicating signals between electrical devices (such as stereo or video speaker or interconnect cables or similar circuits) include applying a bias voltage across the dielectric without interfering with the signals, by applying an energy source to at least one conductor not in the signal path.
    Type: Grant
    Filed: September 5, 2006
    Date of Patent: January 18, 2011
    Inventors: William E. Low, Richard Vandersteen
  • Apparatus and methods for dielectric bias system
    Patent number: 7126055
    Abstract: Methods and apparatus of connecting and communicating signals between electrical devices (such as stereo or video speaker or interconnect cables or similar circuits) include applying a bias voltage across the dielectric without interfering with the signals, by applying an energy source to at least one conductor not in the signal path.
    Type: Grant
    Filed: November 3, 2003
    Date of Patent: October 24, 2006
    Inventors: William E. Low, Richard Vandersteen