Granted Patent
Utility
US 6,191,060 · App. 09/215,362
Reclamation of metal catalysts used in the production of diaryl carbonates
Inventor:
John Yaw Ofori
Patented Case
View Patent ↗
Granted: Feb 20, 2001
Filed: Dec 18, 1998
Inventor
John Yaw Ofori
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.