Granted Patent
Utility
US 6,657,038 · App. 10/284,567
Method for making copolycarbonates
Inventors:
Jan-Pleun Lens, Jan Henk Kamps
Patented Case
View Patent ↗
Granted: Dec 2, 2003
Filed: Nov 1, 2002
Inventors
Jan-Pleun Lens
Jan Henk Kamps
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.