Granted Patent
Utility
US 6,042,920 · App. 09/131,218
Optical quality copolycarbonates containing polyoxyalkylene carbonate units
Inventors:
Gautam Chatterjee, Joseph A. King, Jr., Donald G. LeGrand, Godavarthi Satyanarayana Varadarajan
Patented Case
View Patent ↗
Granted: Mar 28, 2000
Filed: Aug 7, 1998
Inventors
Gautam Chatterjee
Joseph A. King, Jr.
Donald G. LeGrand
Godavarthi Satyanarayana Varadarajan
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.