Patents by Inventor Karl-Friedrich M{umlaut over (u)}ck

Karl-Friedrich M{umlaut over (u)}ck 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).

  • Process for preparing polyoxymethylene molding compositions of improved quality
    Patent number: 6169164
    Abstract: A process for the cationically initiated preparation of oxymethylene copolymers in which, after the polymerization and after comminution of the crude polymer in a grinding assembly a portion of the deactivation suspension comprising the ground crude polymer is removed downstream of the grinding assembly and fed back to the process upstream of the grinding assembly. The return procedure predominantly reduces the proportion of oversize while the proportion of undersize rises only insignificantly. The treated crude polymer also has a lower proportion of unstable chain ends.
    Type: Grant
    Filed: August 20, 1999
    Date of Patent: January 2, 2001
    Assignee: Ticona GmbH
    Inventors: Karl-Friedrich M{umlaut over (u)}ck, Horst Röschert, Joachim Endres, Juergen Kroll, Rainer Hensl