Patents by Inventor Tanja Gruter-Reetz

Tanja Gruter-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).

  • 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
  • Mold multilayered sheet for use as a diffuser in flat screens
    Publication number: 20070224367
    Abstract: A multilayer sheet suitable for use as a diffuser in flat screens is disclosed. The sheet includes at least one base layer (B) and at least one outer layer (A) wherein (B) comprise a transparent thermoplastics material and transparent polymeric particles, with the proviso that the refractive index of the material and particles differ one from the other, and wherein said (A) comprise a transparent polycarbonate and a bismalonate UV absorber.
    Type: Application
    Filed: March 21, 2007
    Publication date: September 27, 2007
    Inventors: Claus Rudiger, Jurgen Rohner, Tanja Gruter-Reetz, Klaus Kraner
  • Light-scattering plastics composition having high brightness and use thereof in flat screens
    Publication number: 20070077414
    Abstract: A thermoplastic molding composition suitable for the preparation of sheets, in particular for making diffuser sheets in flat screens is disclosed. The composition that contains 80 to 99.9% of a transparent thermoplastic material and 0.01 to 20% of scattering pigments in the form of polymeric particles having average particle diameter of 1 to 100 ?m. is distinguished by a particularly low fines content of the scattering pigments.
    Type: Application
    Filed: October 3, 2006
    Publication date: April 5, 2007
    Inventors: Claus Rudiger, Heinz Pudleiner, Jurgen Rohner, Tanja Gruter-Reetz, Klaus Meyer
  • Light-scattering moldings with high light transmission
    Publication number: 20070060704
    Abstract: A solid sheet comprising 80 to 99.99 wt. % of a transparent polycarbonate having weight average molecular weight of 15,000 to 21,000 g/mol, specifically excluding 18,000 g/mol, and 0.01 to 20 wt. % of transparent polymeric particles having an optical density which differs from that of the polycarbonate is disclosed. The sheet is particularly suitable as a diffuser in flat screens.
    Type: Application
    Filed: August 16, 2006
    Publication date: March 15, 2007
    Inventors: Claus Rudiger, Klaus Kraner, Jurgen Rohner, Tanja Gruter-Reetz, Fumika Kaneko
  • Light-scattering sheet having high light transmission and improved antistatic properties
    Publication number: 20070060681
    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: Application
    Filed: August 21, 2006
    Publication date: March 15, 2007
    Inventors: Claus Rudiger, Heinz Pudleiner, Klaus Meyer, Jurgen Rohner, Tanja Gruter-Reetz, Fumika Kaneko
  • Compositions containing polycarbonate and novel UV absorbers
    Publication number: 20070054991
    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: Application
    Filed: August 30, 2006
    Publication date: March 8, 2007
    Inventors: Claus Rudiger, Frank Buckel, Peter Schwarz, Jurgen Rohner, Tanja Gruter-Reetz
  • Light-scattering shaped articles of high light transmission and the use thereof in flat screens
    Publication number: 20060198999
    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: Application
    Filed: February 24, 2006
    Publication date: September 7, 2006
    Inventors: Claus Rudiger, Michael Prein, Marco Roelofs, Juergen Rohner, Tanja Gruter-Reetz