Granted Patent
Utility
US 5,624,627 · App. 08/461,949
Process for preparing surface-modified biaxially oriented film of high molecular weight polyethylene
Inventors:
Kazuo Yagi, Hitoshi Mantoku, Akinao Hashimoto, Isaburo Higashi, Yoshinori Akana
Patented Case
View Patent ↗
Granted: Apr 29, 1997
Filed: Jun 5, 1995
Inventors
Kazuo Yagi
Hitoshi Mantoku
Akinao Hashimoto
Isaburo Higashi
Yoshinori Akana
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.