Granted Patent
Utility
US 6,740,174 · App. 09/987,327
Soft Cr-containing steel
Inventors:
Atsushi Miyazaki, Junichiro Hirasawa, Mineo Muraki, Yoshihiro Yazawa, Osamu Furukimi
Patented Case
View Patent ↗
Granted: May 25, 2004
Filed: Nov 14, 2001
Inventors
Atsushi Miyazaki
Junichiro Hirasawa
Mineo Muraki
Yoshihiro Yazawa
Osamu Furukimi
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.