Granted Patent
Utility
US 6,723,403 · App. 10/055,932
Multi-layer container structure
Inventors:
Ikuya Ishii, Hiroshi Odaka
Patented Case
View Patent ↗
Granted: Apr 20, 2004
Filed: Jan 28, 2002
Inventors
Ikuya Ishii
Hiroshi Odaka
Assignee (at issue)
Idemitsu Petrochemical Co., 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.