Patents by Inventor Heidemarie Pantke

Heidemarie Pantke 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).

  • Polycarbonate containing diphenyl carbonate and sheets made therefrom
    Patent number: 6858303
    Abstract: A thermoplastic molding composition comprising polycarbonate and 50 ppm to 300 ppm, in relation to the weight of the composition, of diphenyl carbonate is disclosed. The composition is especially suitable for the preparation of extruded sheets, in particular coextruded.
    Type: Grant
    Filed: October 7, 2003
    Date of Patent: February 22, 2005
    Assignee: Bayer Aktiengesellschaft
    Inventors: Rüdiger Gorny, Siegfried Anders, Wolfgang Nising, Heidemarie Pantke, James Mason, Melanie Möthrath
  • Polycarbonate containing diphenyl carbonate and sheets made therefrom
    Publication number: 20040122147
    Abstract: A thermoplastic molding composition comprising polycarbonate and 50 ppm to 300 ppm, in relation to the weight of the composition, of diphenyl carbonate is disclosed. The composition is especially suitable for the preparation of extruded sheets, in particular coextruded.
    Type: Application
    Filed: October 7, 2003
    Publication date: June 24, 2004
    Inventors: Rudiger Gorny, Siegfried Anders, Wolfgang Nising, Heidemarie Pantke, James Mason, Melanie Mothrath
  • (Co)polycarbonates stabilized against .gamma.-radiation
    Patent number: 5936007
    Abstract: The present invention provides polycarbonate moulding compositions containing polycarbonates, stabilisers of the general formula (I)R.sub.1 --X--(CHR.sub.4).sub.n --Y--R.sub.2and optionally polypropylene glycols.The present invention also provides use of these moulding compositions for preparing items for medical applications.
    Type: Grant
    Filed: July 14, 1998
    Date of Patent: August 10, 1999
    Assignee: Bayer AG
    Inventors: Wolfgang Ebert, Ralf Hufen, Heidemarie Pantke, Klaus Berg
  • (Co) polycarbonates stabilised against .gamma.-radiation
    Patent number: 5852070
    Abstract: The present invention provides polycarbonate moulding compositions containing polycarbonates, stabilisers of the general formula (I)R.sub.1 --X--(CHR.sub.4).sub.n --Y--R.sub.2,where X and Y, are either ##STR1## , and Y may also be --S--, and optionally polypropylene glycols. The present invention also provides use of these moulding compositions for preparing items for medical applications.
    Type: Grant
    Filed: November 4, 1996
    Date of Patent: December 22, 1998
    Assignee: Bayer AG
    Inventors: Wolfgang Ebert, Ralf Hufen, Heidemarie Pantke, Klaus Berg