Granted Patent
Utility
US 5,300,586 · App. 07/863,648
Hydroxyl functional derivatives of epoxidized diene block copolymers and process for making them (II)
Inventors:
Robert C. Bening, James R. Erickson, David J. St. Clair, Carma J. Gibler, Joe Flores
Patented Case
View Patent ↗
Granted: Apr 5, 1994
Filed: Apr 3, 1992
Inventors
Robert C. Bening
James R. Erickson
David J. St. Clair
Carma J. Gibler
Joe Flores
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.