Granted Patent
Utility
US 5,313,006 · App. 07/994,015
Cogeneration of isobutylene plus MTBE from crude t-butanol/methanol feedstocks
Inventor:
John F. Knifton
Patented Case
View Patent ↗
Granted: May 17, 1994
Filed: Dec 21, 1992
Inventor
John F. Knifton
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.