Granted Patent
Utility
US 6,506,871 · App. 10/167,903
Extrusion method for making polycarbonate
Inventors:
Norberto Silvi, Patrick Joseph McCloskey, James Day, Mark Howard Giammattei
Patented Case
View Patent ↗
Granted: Jan 14, 2003
Filed: Jun 12, 2002
Inventors
Norberto Silvi
Patrick Joseph McCloskey
James Day
Mark Howard Giammattei
Assignee (at issue)
General Electric Company
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.