Patents by Inventor Dietmar Theis

Dietmar Theis 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 having silicon carbide layers
    Patent number: 4531142
    Abstract: A light emitting diode has a substrate body consisting of silicon carbide, which is transmissive for the luminescent radiation generated by the diode. The diode has a first epitaxially deposited layer, consisting of silicon carbide of a first conductivity type, disposed on the substrate body, and a second epitaxially deposited layer of silicon carbide of a second conductivity type disposed on the first layer. The diode has one electrode connected to the second layer and another electrode connected to an exposed portion of the first layer.
    Type: Grant
    Filed: February 16, 1983
    Date of Patent: July 23, 1985
    Assignee: Siemens Aktiengesellschaft
    Inventors: Claus Weyrich, Guenther Ziegler, Ludwig Hoffmann, Dietmar Theis