Granted Patent
Utility
US 6,509,489 · App. 09/694,444
Catalyst compositions for producing aromatic carbonates
Inventors:
Ben Purushotam Patel, Grigorii Lev Soloveichik, Donald Wayne Whisenhunt, Jr., Kirill Vladimirovich Shalyaev
Patented Case
View Patent ↗
Granted: Jan 21, 2003
Filed: Oct 24, 2000
Inventors
Ben Purushotam Patel
Grigorii Lev Soloveichik
Donald Wayne Whisenhunt, Jr.
Kirill Vladimirovich Shalyaev
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.