Granted Patent
Utility
US 5,580,951 · App. 08/295,480
Method for preparing aromatic bischloroformate compositions and polycarbonates
Inventors:
James Manio Silva, Robert A. Pyles
Patented Case
View Patent ↗
Granted: Dec 3, 1996
Filed: Aug 25, 1994
Inventors
James Manio Silva
Robert A. Pyles
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.