Granted Patent
Utility
US 5,387,722 · App. 08/125,271
One-step synthesis of methyl t-butyl ether from t-butanol using pentasil zeolite catalysts
Inventors:
John F. Knifton, Pei-Shing E. Dai
Patented Case
View Patent ↗
Granted: Feb 7, 1995
Filed: Sep 23, 1993
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.