Granted Patent
Utility
US 4,777,201 · App. 06/892,043
Surface-roughened film and sheet, and process for production and use thereof
Inventors:
Hiromi Shigemoto, Shunji Abe, Akio Yamamoto
Patented Case
View Patent ↗
Granted: Oct 11, 1988
Filed: Aug 1, 1986
Inventors
Hiromi Shigemoto
Shunji Abe
Akio Yamamoto
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.