Granted Patent
Utility
US 5,275,716 · App. 08/029,781
Method for manufacturing tin-electroplated cold-rolled steel strip
Inventors:
Katsumi Kojima, Mikiyuki Ichiba, Hiroki Iwasa, Toyofumi Watanabe
Patented Case
View Patent ↗
Granted: Jan 4, 1994
Filed: Mar 11, 1993
Inventors
Katsumi Kojima
Mikiyuki Ichiba
Hiroki Iwasa
Toyofumi Watanabe
Assignee (at issue)
NKK 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.