Granted Patent
Utility
US 5,449,718 · App. 08/130,169
Epoxidized viscous conjugated diene block copolymers
Inventors:
James R. Erickson, David J. St. Clair
Patented Case
View Patent ↗
Granted: Sep 12, 1995
Filed: Sep 30, 1993
Inventors
James R. Erickson
David J. St. Clair
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.