Granted Patent
Utility
US 6,699,338 · App. 10/236,907
Method of manufacturing corrosion resistant steel materials
Inventors:
Tatsumi Kimura, Kazuhiko Shiotani, Fumimaru Kawabata, Keniti Amano
Patented Case
View Patent ↗
Granted: Mar 2, 2004
Filed: Sep 9, 2002
Inventors
Tatsumi Kimura
Kazuhiko Shiotani
Fumimaru Kawabata
Keniti Amano
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.