Granted Patent
Utility
US 5,422,401 · App. 08/214,186
Modified .alpha.-olefin polymer having tertiary carbon in side chain, and stretched film produced thereof
Inventors:
Kojiro Kan, Katsumi Noritomi
Patented Case
View Patent ↗
Granted: Jun 6, 1995
Filed: Mar 17, 1994
Inventors
Kojiro Kan
Katsumi Noritomi
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.