Patents by Inventor Tanja Grüter-Reetz

Tanja Grüter-Reetz 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).

  • Heat-conducting polycarbonates having improved flame protection by means of barium sulfate
    Patent number: 11912865
    Abstract: The present invention relates to a thermoplastic composition comprising at least one aromatic polycarbonate, talc, at least one anhydride-modified alpha-olefin polymer, at least one organic flame retardant selected from: fluoropolymer-containing anti-drip agents, fluorinated sulfonic acid salts, organic phosphoric acid esters, phosphazenes or mixtures of at least two of the abovementioned agents and barium sulfate. The invention further relates to a production process for such a composition and to a molded article producible from this composition. The composition contains barium sulfate in an amount of ?3% by weight based on the total weight of the composition. ?5% by weight is preferred.
    Type: Grant
    Filed: April 9, 2020
    Date of Patent: February 27, 2024
    Assignee: Covestro Intellectual Property GmbH & Co. KG
    Inventors: Christopher Schirwitz, Tim Hungerland, Tanja Grueter-Reetz, Helmut Kruells
  • HEAT-CONDUCTING POLYCARBONATES HAVING IMPROVED FLAME PROTECTION BY MEANS OF BARIUM SULFATE
    Publication number: 20220220301
    Abstract: The present invention relates to a thermoplastic composition comprising at least one aromatic polycarbonate, talc, at least one anhydride-modified alpha-olefin polymer, at least one organic flame retardant selected from: fluoropolymer-containing anti-drip agents, fluorinated sulfonic acid salts, organic phosphoric acid esters, phosphazenes or mixtures of at least two of the abovementioned agents and barium sulfate. The invention further relates to a production process for such a composition and to a molded article producible from this composition. The composition contains barium sulfate in an amount of ?3% by weight based on the total weight of the composition. ?5% by weight is preferred.
    Type: Application
    Filed: April 9, 2020
    Publication date: July 14, 2022
    Inventors: Christopher SCHIRWITZ, Tim HUNGERLAND, Tanja GRUETER-REETZ, Helmut KRUELLS
  • Light-scattering sheet having high light transmission and improved antistatic properties
    Patent number: 7790287
    Abstract: A solid sheet comprising transparent polycarbonate matrix, particles of a transparent polymer and an antistatic agent is disclosed. Characterized in that the refractive index of said matrix differs from that of said polymer, the sheet is suitable in making diffuser plate in flat screens.
    Type: Grant
    Filed: August 21, 2006
    Date of Patent: September 7, 2010
    Assignee: Bayer MaterialScience AG
    Inventors: Claus Rüdiger, Heinz Pudleiner, Klaus Meyer, Jürgen Röhner, Tanja Grüter-Reetz, Fumika Kaneko
  • Compositions containing polycarbonate and novel UV absorbers
    Patent number: 7652082
    Abstract: A thermoplastic compositions containing polycarbonate and a UV absorbing compound conforming to Formula 1 wherein R denotes a branched or unbranched alkyl group with 4 to 10 carbon atoms is disclosed. The composition is suitable for making molded or extruded articles, including multilayered articles exhibiting improved weatherability.
    Type: Grant
    Filed: August 30, 2006
    Date of Patent: January 26, 2010
    Assignee: BASF SE
    Inventors: Claus Rüdiger, Frank Buckel, Peter Schwarz, Jürgen Röhner, Tanja Grüter-Reetz
  • Light-scattering shaped articles of high light transmission and the use thereof in flat screens
    Patent number: 7582720
    Abstract: The present invention relates to a solid sheet prepared from a composition that includes: (a) a transparent polycarbonate; and (b) transparent polymeric particles having an optical density which differs from the transparent polycarbonate matrix material. The present invention also relates to use of such a solid sheet as a diffuser sheet in flat screens.
    Type: Grant
    Filed: February 24, 2006
    Date of Patent: September 1, 2009
    Assignee: Bayer Material Science AG
    Inventors: Claus Rüdiger, Michael Prein, Marco Roelofs, Jürgen Röhner, Tanja Grüter-Reetz