Patents by Inventor Rolf WALDNER

Rolf WALDNER 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).

  • Method of producing low-dust granules from polymer additives
    Patent number: 8609807
    Abstract: The invention relates to a technically advantageous method of producing low-dust granules of polymer additives or polymer additive mixtures. The granule-forming polymer additives are mixed together, the mixture is converted into a workable mass and pressed through an orifice. The pre-shaped strand-like extruded mass is cooled and, while still in a workable state, formed into granules by rolling, impressing, cooling and comminuting.
    Type: Grant
    Filed: January 14, 2005
    Date of Patent: December 17, 2013
    Assignee: BASF SE
    Inventors: Benjamin Breitenstein, Thomas Georg Gfrörer, Rolf Waldner, Pierre Lutz
  • Method of producing low-dust granules from polymer additives
    Publication number: 20090194617
    Abstract: The invention relates to a technically advantageous method of producing low-dust granules of polymer additives or polymer additive mixtures. The granule-forming polymer additives are mixed together, the mixture is converted into a workable mass and pressed through an orifice. The pre-shaped strand-like extruded mass is cooled and, while still in a workable state, formed into granules by rolling, impressing, cooling and comminuting.
    Type: Application
    Filed: January 14, 2005
    Publication date: August 6, 2009
    Applicant: CIBA SPECIALTY CHEMICALS HOLDING INC.
    Inventors: Benjamin BREITENSTEIN, Thomas Georg GFRORER, Rolf WALDNER, Pierre LUTZ