Granted Patent
Utility
US 6,613,160 · App. 09/924,353
Method to produce grain-oriented electrical steel sheet having high magnetic flux density
Inventors:
Yoshiyuki Ushigami, Shuichi Nakamura, Kenichi Murakami, Hiroyasu Fujii, Norihiro Yamamoto
Patented Case
View Patent ↗
Granted: Sep 2, 2003
Filed: Aug 7, 2001
Inventors
Yoshiyuki Ushigami
Shuichi Nakamura
Kenichi Murakami
Hiroyasu Fujii
Norihiro Yamamoto
Assignee (at issue)
NIPPON 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.