Granted Patent
Utility
US 5,736,612 · App. 08/590,712
Process for manufacturing isoprene containing block copolymers
Inventors:
Arie Van Dongen, Helmuth Einberger, Jeroen Van Westrenen
Patented Case
View Patent ↗
Granted: Apr 7, 1998
Filed: Aug 19, 1996
Inventors
Arie Van Dongen
Helmuth Einberger
Jeroen Van Westrenen
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.