Granted Patent
Utility
US 5,166,277 · App. 07/785,715
Hydrogenation of unsaturation in low molecular weight diene polymers
Inventors:
Daniel E. Goodwin, Carl L. Willis
Patented Case
View Patent ↗
Granted: Nov 24, 1992
Filed: Oct 31, 1991
Inventors
Daniel E. Goodwin
Carl L. Willis
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.