Patents by Inventor Hubert Speitzer

Hubert Speitzer 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).

  • Conjugated polymers containing dihydrophenanthrene units and use thereof
    Publication number: 20070060736
    Abstract: The invention relates to conjugated polymers containing novel structural units according to formula (1). The inventive materials are characterized by increased efficiency and a longer service life when used in polymer organic light emitting diodes. The present invention relates to conjugated polymers which comprise novel structural units of the formula (I). The materials of the invention display improved efficiency and a longer life when used in polymeric organic light-emitting diodes.
    Type: Application
    Filed: August 12, 2004
    Publication date: March 15, 2007
    Inventors: Heinrich Becker, Esther Breuning, Arne Busing, Aurelie Falcou, Corinna Haase, Hubert Speitzer, Silke Turk