Granted Patent
Utility
US 5,053,569 · App. 07/500,631
Process for oligomerizing olefins to prepare base stocks for synthetic lubricants
Inventors:
Edward T. Marquis, John R. Sanderson, John F. Knifton
Patented Case
View Patent ↗
Granted: Oct 1, 1991
Filed: Mar 28, 1990
Inventors
Edward T. Marquis
John R. Sanderson
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.