Granted Patent
Utility
US 4,977,285 · App. 07/447,934
Recovery of tertiary butyl hydroperoxide and tertiary butyl alcohol
Inventors:
Edward T. Marquis, Kenneth P. Keating, Robert A. Meyer, John R. Sanderson
Patented Case
View Patent ↗
Granted: Dec 11, 1990
Filed: Dec 8, 1989
Inventors
Edward T. Marquis
Kenneth P. Keating
Robert A. Meyer
John R. Sanderson
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.