Granted Patent
Utility
US 5,098,751 · App. 07/467,245
Food packaging container
Inventors:
Eiji Tamura, Hideo Kawai, Isamu Yamamoto, Hiroshi Hasunuma
Patented Case
View Patent ↗
Granted: Mar 24, 1992
Filed: Jan 19, 1990
Inventors
Eiji Tamura
Hideo Kawai
Isamu Yamamoto
Hiroshi Hasunuma
Assignees (at issue)
Idemitsu Petrochemical Co., Ltd.
Showa Aluminium Corporation
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.