Patents by Inventor Bernhard Elbert

Bernhard Elbert 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).

  • Anti yellowing composition
    Patent number: 9822251
    Abstract: The present invention relates to a radical scavenging and anti-yellowing composition for polymeric materials and compositions containing the same. The invention further relates to medical devices comprising a composition according to the invention and to a method of sterilizing such devices.
    Type: Grant
    Filed: August 28, 2012
    Date of Patent: November 21, 2017
    Assignee: TRINSEO EUROPE GMBH
    Inventors: Bernhard Elbert, Eike Jahnke
  • Anti Yellowing Composition
    Publication number: 20150159014
    Abstract: The present invention relates to a radical scavenging and anti-yellowing composition for polymeric materials and compositions containing the same. The invention further relates to medical devices comprising a composition according to the invention and to a method of sterilizing such devices.
    Type: Application
    Filed: August 28, 2012
    Publication date: June 11, 2015
    Applicant: STYRON EUROPE GMBH
    Inventors: Bernhard Elbert, Eike Jahnke
  • PROCESS FOR PREPARING LINEAR POLYCARBONATE WITH IMPROVED IMPACT PROPERTIES
    Publication number: 20110224372
    Abstract: The present invention relates to an improved process for preparing linear polycarbonates having an improved technique for adding a coupling catalyst compound, specifically the addition of the coupling catalyst at two or more separate, different points in the process. Linear polycarbonate resins prepared by said process demonstrate a lower level of polycarbonate oligomers and an improved balance of properties, in particular improved impact strength and lower ductile brittle transition temperature.
    Type: Application
    Filed: November 16, 2009
    Publication date: September 15, 2011
    Inventors: Guenter Jueptner, Bernhard Elbert
  • Process for preparing branched polycarbonate
    Patent number: 7057005
    Abstract: The present invention is a process for producing branched polycarbonate providing for optimum utilization of the branching agent. It was surprisingly found that adding at least a portion of the coupling catalyst to the polymerization at a point during the oligomerization in the reaction results in a higher degree of branching and improved rheological properties.
    Type: Grant
    Filed: June 29, 2004
    Date of Patent: June 6, 2006
    Assignee: Dow Global TechnologiessInc.
    Inventors: Susanne Rohde, Bernhard Elbert
  • Process for preparing branched polycarbonate
    Publication number: 20050020804
    Abstract: The present invention is a process for producing branched polycarbonate providing for optimum utilization of the branching agent. It was surprisingly found that adding at least a portion of the coupling catalyst to the polymerization at a point during the oligomerization in the reaction results in a higher degree of branching and improved rheological properties.
    Type: Application
    Filed: June 29, 2004
    Publication date: January 27, 2005
    Inventors: Susanne Rohde, Bernhard Elbert