Granted Patent
Utility
US 5,612,435 · App. 08/539,467
Terminally functionalized polymers produced using protected functional initiators
Inventors:
Robert C. Bening, Carl L. Willis
Patented Case
View Patent ↗
Granted: Mar 18, 1997
Filed: Oct 5, 1995
Inventors
Robert C. Bening
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.