Patents by Inventor Chen Why Tan

Chen Why Tan 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).

  • Light emitting diode with gradient index layering
    Patent number: 6717362
    Abstract: A light emitting diode (100) is disclosed comprising a p-n junction diode for emitting light; and a transparent casing encapsulating the p-n junction diode. The transparent casing having an inner portion in contact with the p-n junction diode, wherein the refractive index of the transparent casing is higher at the inner portion than an outer portion thereof. In one embodiment the transparent casing comprises at least a first and a second transparent layer, with the first transparent layer encapsulating the p-n junction diode, and the second transparent layer encapsulating the first transparent layer, wherein the refractive index of the first transparent layer is higher than the refractive index of the second transparent layer. In an alternative embodiment the transparent casing comprises at least one transparent layer, wherein the refractive index of the transparent layer is higher at an inner portion than an outer portion thereof.
    Type: Grant
    Filed: February 20, 2003
    Date of Patent: April 6, 2004
    Assignee: Agilent Technologies, Inc.
    Inventors: Boon Kheng Lee, Kee Siang Goh, Yee Loong Chin, Chen Why Tan