Granted Patent
Utility
US 4,900,850 · App. 06/945,628
Recovery of purified ditertiary butyl peroxide
Inventors:
John R. Sanderson, Robert A. Meyer
Patented Case
View Patent ↗
Granted: Feb 13, 1990
Filed: Dec 23, 1986
Inventors
John R. Sanderson
Robert A. Meyer
Assignee (at issue)
Texaco 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.