Granted Patent
Utility
US 5,532,030 · App. 08/451,812
Polyolefin multilayer laminate, vessel and packaging material
Inventors:
Toshiyuki Hirose, Shigetoshi Nishijima, Yohzoh Yamamoto, Hideshi Kawachi, Michio Tsugawa
Patented Case
View Patent ↗
Granted: Jul 2, 1996
Filed: May 26, 1995
Inventors
Toshiyuki Hirose
Shigetoshi Nishijima
Yohzoh Yamamoto
Hideshi Kawachi
Michio Tsugawa
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.