Granted Patent
Utility
US 4,288,648 · App. 06/151,961
Process for the oligomerization of ethylene
Inventors:
David L. Beach, Thaddeus P. Kobylinski
Patented Case
View Patent ↗
Granted: Sep 8, 1981
Filed: May 21, 1980
Inventors
David L. Beach
Thaddeus P. Kobylinski
Assignee (at issue)
Gulf Research & Development Company
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.