Patents Assigned to J. W. Holding GmbH
  • Tanning device using semiconductor light-emitting diodes
    Patent number: 7901442
    Abstract: A tanning device is described that includes semiconductor light-emitting diodes (LEDs) as a light source, which LEDs are preferably composed of (InGa)N, (AlGa)N, (AlInGa)N or (AlInGa)P as their semiconductor material.
    Type: Grant
    Filed: April 27, 2004
    Date of Patent: March 8, 2011
    Assignee: J. W. Holding GmbH
    Inventors: Thomas Juestel, Cornelis Reinder Ronda