Granted Patent
Utility
US 5,753,769 · App. 08/448,569
Process for preparing propylene polymer composition and propylene polymer composition
Inventors:
Takashi Ueda, Mikio Hashimoto, Masaaki Kawasaki, Daisuke Fukuoka, Junichi Imuta
Patented Case
View Patent ↗
Granted: May 19, 1998
Filed: Jun 7, 1995
Inventors
Takashi Ueda
Mikio Hashimoto
Masaaki Kawasaki
Daisuke Fukuoka
Junichi Imuta
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.