Granted Patent
Utility
US 6,767,944 · App. 10/079,980
Flame-resistant polycarbonate compositions having increased chemical resistance
Inventors:
Michael Zobel, Andreas Seidel, Thomas Eckel, Torsten Derr, Dieter Wittmann
Patented Case
View Patent ↗
Granted: Jul 27, 2004
Filed: Feb 21, 2002
Inventors
Michael Zobel
Andreas Seidel
Thomas Eckel
Torsten Derr
Dieter Wittmann
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.