Patents by Inventor Rainer Wernicke

Rainer Wernicke 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).

  • Preparation of microcrystalline triacetylcellulose
    Patent number: 4697007
    Abstract: The preparation of microcrystalline triacetylcellulose by acid-catalyzed acetylation of microcrystalline cellulose, perfluoroalkanesulfonic acids with 1 to 8 carbon atoms are used as the catalyst, resulting in a non-hazardous process and high yields of exceptionally high purity product, the latter being particularly suitable for chromatographic purposes, in particular for the chromatographic resolution of racemates.
    Type: Grant
    Filed: March 1, 1985
    Date of Patent: September 29, 1987
    Assignee: Merck Patent Gesellschaft mit beschrankter Haftung
    Inventors: Georg Seitz, Rainer Wernicke