Granted Patent
Utility
US 5,464,905 · App. 08/154,467
Ethylene/.alpha.-olefin copolymer composition, graft modified ethylene/.alpha.-olefin copolymer composition, ethylene copolymer composition, and multi-stage olefin polymerization process
Inventors:
Toshiyuki Tsutsui, Ken Yoshitsugu, Mamoru Takahashi, Akira Todo, Seiji Ohta, Hajime Inagaki
Patented Case
View Patent ↗
Granted: Nov 7, 1995
Filed: Nov 18, 1993
Inventors
Toshiyuki Tsutsui
Ken Yoshitsugu
Mamoru Takahashi
Akira Todo
Seiji Ohta
Hajime Inagaki
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.