Patents by Inventor Werner Fraenkel

Werner Fraenkel 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).

  • Optically active adsorbents
    Patent number: 4882048
    Abstract: Absorbents based on optically active poly(meth)acrylamides, e.g. bonded to silica gel, can be used for separating racemic mixtures into their optical antipodes.
    Type: Grant
    Filed: February 21, 1989
    Date of Patent: November 21, 1989
    Assignee: Merck Patent Gesellschaft Mit Beschrankter Haftung
    Inventors: Gottfried Blaschke, Werner Fraenkel, Werner Broker, Joachim Kinkel