Granted Patent
Utility
US 4,349,603 · App. 06/266,470
Laminated multilayer structure
Inventors:
Masao Kameyama, Teiichi Shiomi
Patented Case
View Patent ↗
Granted: Sep 14, 1982
Filed: May 22, 1981
Inventors
Masao Kameyama
Teiichi Shiomi
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.