Granted Patent
Utility
US 4,397,916 · App. 06/237,610
Laminated multilayer structure
Inventor:
Riichiro Nagano
Patented Case
View Patent ↗
Granted: Aug 9, 1983
Filed: Feb 24, 1981
Inventor
Riichiro Nagano
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.