Granted Patent
Utility
US 5,336,746 · App. 07/901,972
Propylene random copolymers and processes for preparing same
Inventors:
Toshiyuki Tsutsui, Akinori Toyota
Patented Case
View Patent ↗
Granted: Aug 9, 1994
Filed: Jun 22, 1992
Inventors
Toshiyuki Tsutsui
Akinori Toyota
Assignee (at issue)
Mitsui Petrochemical Industries, Ltd.
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.