Granted Patent
Utility
US 5,387,723 · App. 08/181,143
One-step synthesis of methyl t-butyl ether from t-butanol using .beta.-zeolite catalysts modified with lithium plus rare earths
Inventors:
John F. Knifton, Pei-Shing E. Dai
Patented Case
View Patent ↗
Granted: Feb 7, 1995
Filed: Jan 12, 1994
Inventors
John F. Knifton
Pei-Shing E. Dai
Assignee (at issue)
Texaco Chemical Inc.
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.