Patents by Inventor Dieter Zickler

Dieter Zickler 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 the preparation of polyester-masterbatch containing finely divided additives
    Patent number: 5308892
    Abstract: Process for the manufacture of a polyester masterbatch containing finely divided solid additives in homogenous and agglomerate-free distribution, through the mixing, within a homogenizing extruder, of the powdery additive into the polyester, whereby, separately from the addition of the additive, small quantities of a diol are additionally fed into the extruder.
    Type: Grant
    Filed: May 6, 1993
    Date of Patent: May 3, 1994
    Assignee: Zimmer Aktiengesellschaft
    Inventors: Dieter Zickler, Ulrich Thiele