Granted Patent
Utility
US 6,749,952 · App. 10/097,928
Tin-plated steel sheet
Inventors:
Tomofumi Shigekuni, Hisatada Nakakoji, Chiaki Kato
Patented Case
View Patent ↗
Granted: Jun 15, 2004
Filed: Mar 15, 2002
Inventors
Tomofumi Shigekuni
Hisatada Nakakoji
Chiaki Kato
Assignee (at issue)
JFE 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.