Patents by Inventor Rudolf Paatz

Rudolf Paatz 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).

  • Stabilization of polyethylene grit
    Patent number: 5461097
    Abstract: A process is described for stabilizing polyethylene grit in which a sterically hindered phenol and an ester of phosphorous or of hypophosphorous acid are added to said grit, wherein the sterically hindered phenol in melt form and the ester of phosphorous or of hypophosphorous acid are made available to the polyethylene grit within a ground polyolefin matrix in which the ester is incorporated, the polyolefin matrix being compatible with the polyethylene grit.
    Type: Grant
    Filed: December 1, 1993
    Date of Patent: October 24, 1995
    Assignee: BASF Aktiengesellschaft
    Inventors: Guenther Pfirrmann, Dieter Boes, Rudolf Paatz