Patents by Inventor Christine Pfister

Christine Pfister 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).

  • Supertwist liquid-crystal display
    Patent number: 6017469
    Abstract: Supertwist liquid crystal displays with outstanding properties are obtained when the nematic liquid crystal mixture contains at least one compound of the formula (I): ##STR1## where the variables are as defined in the disclosure.
    Type: Grant
    Filed: December 1, 1997
    Date of Patent: January 25, 2000
    Assignee: Merck Patent Gesellschaft mit Beschrankter Haftung
    Inventors: Volker Reiffenrath, Bernhard Rieger, Michael Junge, Martina Schmidt, Christine Pfister