Patents by Inventor Arne Buessing

Arne Buessing 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).

  • Carbazole derivatives for organic electroluminescent devices
    Patent number: 8343637
    Abstract: The present invention relates to compounds of the formula (1) and to the use thereof in organic electroluminescent devices, in particular as matrix material in phosphorescent devices.
    Type: Grant
    Filed: December 10, 2007
    Date of Patent: January 1, 2013
    Assignee: Merck Patent GmbH
    Inventors: Amir Hossain Parham, Jonas Kroeber, Arne Buessing, Horst Vestweber