Granted Patent
Utility
US 6,638,368 · App. 09/985,444
Non-oriented electrical steel sheet and method for producing the same
Inventors:
Ichiro Tanaka, Hiroyoshi Yashiki, Mitsuyo Maeda, Taisei Nakayama, Noriyuki Honjou, Shinsuke Mita
Patented Case
View Patent ↗
Granted: Oct 28, 2003
Filed: Nov 2, 2001
Inventors
Ichiro Tanaka
Hiroyoshi Yashiki
Mitsuyo Maeda
Taisei Nakayama
Noriyuki Honjou
Shinsuke Mita
Assignee (at issue)
SUMITOMO METAL INDUSTRIES, LTD.
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.