Patents by Inventor Robert S. Stepleman

Robert S. Stepleman 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).

  • Solar cell with two-dimensional reflecting diffraction grating
    Patent number: 4493942
    Abstract: A solar cell which includes a thin layer of active material bounded on the side toward the incident light with an antireflection coating and bounded on the other side by a two-dimensional reflecting diffraction grating to internally reflect the incident light back into the active material.
    Type: Grant
    Filed: January 18, 1983
    Date of Patent: January 15, 1985
    Assignee: Exxon Research and Engineering Co.
    Inventors: Ping Sheng, Robert S. Stepleman