Granted Patent
Utility
US 6,143,913 · App. 09/301,696
Method and catalyst system for producing aromatic carbonates
Inventors:
James Spivack, Donald Wayne Whisenhunt, Jr., James Norman Cawse, Bruce Fletcher Johnson
Patented Case
View Patent ↗
Granted: Nov 7, 2000
Filed: Apr 29, 1999
Inventors
James Spivack
Donald Wayne Whisenhunt, Jr.
James Norman Cawse
Bruce Fletcher Johnson
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.