Patents by Inventor Icheng Wu

Icheng Wu 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).

  • Patent number: 4062102
    Abstract: A process for manufacturing a solar cell from a reject semiconductor wafer comprising stripping all external layers from the wafer, etching the surfaces of the wafer so as to effectively remove all P/N junctions without pitting the wafer surface, introducing a layer of dopant to form a P/N junction in the front wafer surface, forming a first patterned conductive electrode over the dopant layer, and forming a second conductive electrode on the back surface of the wafer. In the preferred embodiment a sputtering operation is used to form the conductive electrodes.
    Type: Grant
    Filed: December 31, 1975
    Date of Patent: December 13, 1977
    Assignee: Silicon Material, Inc.
    Inventors: John E. Lawrence, Icheng Wu