Patents by Inventor Rudi Ulzheimer

Rudi Ulzheimer 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 making filled silicone rubber compositions
    Patent number: 7960449
    Abstract: A process for the production of a polysiloxane containing mass incorporating surface treated filler materials comprising feeding materials to a change can mixer in which the materials are mixed; the change can mixer comprising a detachable mixing head assembly containing least two spiral mixing arms extending downwardly into the can of the change can mixer, drive means for rotating the spiral mixing arms around their own axis, and drive means for rotating the spiral mixing arms as a unit around the axis of the can and wherein the geometry of the mixing arms is such that they generate downwardly directing motion on the composition being mixed.
    Type: Grant
    Filed: February 10, 2005
    Date of Patent: June 14, 2011
    Assignee: Dow Corning Corporation
    Inventor: Rudi Ulzheimer
  • Process For Making Filled Silicone Rubber Compositions
    Publication number: 20070282036
    Abstract: A process for the production of a polysiloxane containing mass incorporating surface treated filler materials comprising feeding materials to a change can mixer in which the materials are mixed; the change can mixer comprising a detachable mixing head assembly containing least two spiral mixing arms extending downwardly into the can of the change can mixer, drive means for rotating the spiral mixing arms around their own axis, and drive means for rotating the spiral mixing arms as a unit around the axis of the can and wherein the geometry of the mixing arms is such that they generate downwardly directing motion on the composition being mixed.
    Type: Application
    Filed: February 10, 2005
    Publication date: December 6, 2007
    Inventor: Rudi Ulzheimer
  • Process for preparing siloxane-filler compositions using an extruder mixer
    Publication number: 20060140048
    Abstract: Methods describing a process for the production of polysiloxane containing masses, containing surface treated filler material, by continuously feeding materials to a screw extruder (12) in which they are mixed and conveyed to an outlet (14) with removal of gaseous materials therefrom. The screw extruder (12) has at least two screws (22) located in communicating chambers distributed radially about a common axis (26) and extending with the axis of each screw parallel to the common axis (26). The materials being mixed in the extruder typically comprise (a) a polysiloxane, (b a reinforcing filler and (c) a hydrophobing agent. Each material is fed into the extruder (12) as the material itself or in admixture with any one or more of the others of (a), (b) and (c).
    Type: Application
    Filed: November 23, 2001
    Publication date: June 29, 2006
    Inventors: Rudi Ulzheimer, Stefan Reuss
  • Manufacture of moisture curable organosiloxane compositions
    Patent number: 5227111
    Abstract: The specification is concerned with a process and apparatus for continuous manufacture of moisture curable silicone compositions.
    Type: Grant
    Filed: January 21, 1992
    Date of Patent: July 13, 1993
    Assignee: Dow Corning, S.A.
    Inventors: George D. Brangers, Carlos Mesa-Forero, Rudi Ulzheimer, Charles B. Winter