Granted Patent
Utility
US 5,135,901 · App. 07/711,771
A catalyst composition comprising rhodium, ruthenium,and a promoter
Inventor:
William A. Beavers
Patented Case
View Patent ↗
Granted: Aug 4, 1992
Filed: Jun 7, 1991
Inventor
William A. Beavers
Assignee (at issue)
Eastman Chemical 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.