Granted Patent
Utility
US 5,286,695 · App. 07/936,275
Oligomerization catalyst for .alpha.-olefins and process for oligomerizing .alpha.-olefins
Inventors:
Keiji Hirose, Wilhelm Keim
Patented Case
View Patent ↗
Granted: Feb 15, 1994
Filed: Aug 28, 1992
Inventors
Keiji Hirose
Wilhelm Keim
Assignee (at issue)
Mitsui Petrochemical Industries, Ltd.
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.