Granted Patent
Utility
US 5,518,558 · App. 08/153,670
Aluminum alloy sheets excellent in strength and deep drawing formability and process for manufacturing same
Inventors:
Ryo Shoji, Yoichiro Bekki
Patented Case
View Patent ↗
Granted: May 21, 1996
Filed: Nov 16, 1993
Inventors
Ryo Shoji
Yoichiro Bekki
Assignees (at issue)
FURUKAWA ELECTRIC CO., LTD.
Kawasaki Steel 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.