Granted Patent
Utility
US 6,323,280 · App. 08/414,702
Flame retardant polycarbonate blends
Inventors:
Winfried Paul, Sivaram Krishnan, Roger J. White
Patented Case
View Patent ↗
Granted: Nov 27, 2001
Filed: Mar 31, 1995
Inventors
Winfried Paul
Sivaram Krishnan
Roger J. White
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.