Patents by Inventor Sten Helkman

Sten Helkman 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).

  • Monolithic Multi-Junction Light Emitting Devices Including Multiple Groups of Light Emitting Diodes
    Publication number: 20120049214
    Abstract: A packaged light emitting diode (LED) includes a submount, a monolithic multi-junction LED on the submount, and an encapsulant material on the monolithic multi-junction LED. The monolithic multi-junction LED includes a substrate, a plurality of sub-LEDs on the submount, a plurality of conductive metal interconnects coupled to the sub-LEDs and connecting the sub-LEDs in a predetermined arrangement including an anode contact and a cathode contact, and an electrostatic discharge protection circuit in the substrate and coupled in parallel with the arrangement of sub-LEDs.
    Type: Application
    Filed: July 25, 2011
    Publication date: March 1, 2012
    Inventors: Theodore D. Lowes, James Ibbetson, Sten Helkman, Tao Tong