Granted Patent
Utility
US 5,120,891 · App. 07/588,257
Process for oligomerizing olefins using a super-dealuminated Y-zeolite
Inventors:
John R. Sanderson, Pei-Shing E. Dai, John F. Knifton
Patented Case
View Patent ↗
Granted: Jun 9, 1992
Filed: Sep 26, 1990
Inventors
John R. Sanderson
Pei-Shing E. Dai
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.