Granted Patent
Utility
US 6,228,973 · App. 09/584,984
Method for preparing high molecular weight polycarbonate
Inventors:
Patrick Joseph McCloskey, Timothy Brydon Burnell, Paul Michael Smigelski, Jr., Johan Pieter Anna Heuts, Hendricus Franciscus Zirkzee
Patented Case
View Patent ↗
Granted: May 8, 2001
Filed: Jun 2, 2000
Inventors
Patrick Joseph McCloskey
Timothy Brydon Burnell
Paul Michael Smigelski, Jr.
Johan Pieter Anna Heuts
Hendricus Franciscus Zirkzee
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.