Granted Patent
Utility
US 5,378,767 · App. 08/080,044
Fixed bed hydrogenation of low molecular weight polydiene polymers
Inventor:
Stephen N. Massie
Patented Case
View Patent ↗
Granted: Jan 3, 1995
Filed: Jun 18, 1993
Inventor
Stephen N. Massie
Assignee (at issue)
SHELL OIL 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.