Patents Represented by Attorney Frishauf, Holtz, Gooman & Chick, P.C.

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  • LED-based white-emitting illumination unit
    Patent number: 7002291
    Abstract: The inventive white-light emitting luminescent conversion LED uses a chlorosilicate luminous substance which is doped with europium in addition to containing Ca and Mg and a garnet rare-earth substance, especially Y and/or Tb. This results in high quality colour reproduction and highly constant lighting properties at various temperatures.
    Type: Grant
    Filed: December 22, 2004
    Date of Patent: February 21, 2006
    Assignees: Patent-Treuhand-Gesellschaft fur Elektrische Gluhlampen mbH, Osram OPTO Semiconductors GmbH
    Inventors: Andries Ellens, Frank Jermann, Michael Ostertag