Patents by Inventor Johannes Wilhelm Ladage

Johannes Wilhelm Ladage 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).

  • Non-linear optical polycarbonates
    Patent number: 5872882
    Abstract: The invention relates to non-linear optically active (NLO) polycarbonates and to NLO active waveguides containing these polycarbonates. Waveguides containing these NLO polycarbonates have a low loss of signal, a high glass transition temperature and good polability and a high stability of the Pockel's coefficient.
    Type: Grant
    Filed: October 30, 1997
    Date of Patent: February 16, 1999
    Assignee: Akzo Nobel NV
    Inventors: Richard Herman Woudenberg, Tjerk Oedse Boonstra, Johannes Wilhelm Ladage, Ulfert Elle Wiersum