Granted Patent
Utility
US 5,318,824 · App. 07/961,056
Packaging structure
Inventors:
Kozo Itaya, Hirotaka Nishida, Kazutoshi Fukuda
Patented Case
View Patent ↗
Granted: Jun 7, 1994
Filed: Oct 14, 1992
Inventors
Kozo Itaya
Hirotaka Nishida
Kazutoshi Fukuda
Assignees (at issue)
Mitsui Petrochemical Industries, Ltd.
SHIONOGI & CO., LTD.
TAISEI KAKO 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.