Granted Patent
Utility
US 6,569,930 · App. 09/485,165
Flame and stress crack resistant polycarbonate molding compositions
Inventors:
Thomas Eckel, Dieter Wittmann, Michael Zobel, Bernd Keller, Heinrich Alberts
Patented Case
View Patent ↗
Granted: May 27, 2003
Filed: Feb 4, 2000
Inventors
Thomas Eckel
Dieter Wittmann
Michael Zobel
Bernd Keller
Heinrich Alberts
Assignee (at issue)
Bayer Aktiengesellschaft
This patent predates the USPTO's electronic file wrapper — prosecution documents from this era exist only in the Patent Office's paper records. A certified copy of the file history can be ordered from the USPTO's paper archives.