Patents by Inventor Josef G. Berndsen

Josef G. Berndsen 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).

  • Coated polycarbonate articles
    Patent number: 5605754
    Abstract: A thermoplastic article having on the outer surface thereof a protective layer having in admixture a trihydricphenol-benzotriazole ultra violet light absorber and a thermoplastic resin preferably a polycarbonate. The protective layer may be coated on the thermoplastic substrate or it may be co-extruded with the thermoplastic substrate.
    Type: Grant
    Filed: November 30, 1995
    Date of Patent: February 25, 1997
    Assignee: General Electric Company
    Inventors: Josef G. Berndsen, Luca P. Fontana
  • Aromatic polycarbonates having polyfunctional UV screening units, method for making and use
    Patent number: 5556936
    Abstract: UV stabilized polycarbonates are provided having chemically combined polyhydric phenol benzotriazole carbonate units, such as 1,1-bis(4-hydroxyphenyl)-1-[4-hydroxy-3-(N-2-benzotriazole)phenyl]ethane carbonate units and methods for making. Incorporation of the polyhydric phenol benzotriazole functional units into the polycarbonate backbone can be achieved by redistribution or transesterification under melt polymerization conditions.
    Type: Grant
    Filed: November 17, 1994
    Date of Patent: September 17, 1996
    Assignee: General Electric Company
    Inventors: Joseph A. King, Jr., Patrick J. McCloskey, Alice M. Colley, David M. Dardaris, Luca P. Fontana, Josef G. Berndsen