Granted Patent
Utility
US 6,673,470 · App. 10/169,563
Surface treated tin-plated steel sheet and surface treatment solution
Inventors:
Tomofumi Shigekuni, Hisatada Nakakoji, Kazuo Mochizuki, Chiaki Kato
Patented Case
View Patent ↗
Granted: Jan 6, 2004
Filed: Jul 8, 2002
Inventors
Tomofumi Shigekuni
Hisatada Nakakoji
Kazuo Mochizuki
Chiaki Kato
Assignee (at issue)
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.