Granted Patent
Utility
US 6,653,434 · App. 10/026,276
Process for the production of polycarbonate
Inventors:
Hans-Peter Brack, Daniel J. Brunelle, James Anthony Cella, Dennis Karlik
Patented Case
View Patent ↗
Granted: Nov 25, 2003
Filed: Dec 19, 2001
Inventors
Hans-Peter Brack
Daniel J. Brunelle
James Anthony Cella
Dennis Karlik
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.