Granted Patent
Utility
US 5,261,972 · App. 07/965,650
Process for producing grain-oriented electrical steel strip having high magnetic flux density
Inventors:
Katsuro Kuroki, Yasunari Yoshitomi, Hiroaki Masui, Tsutomu Haratani
Patented Case
View Patent ↗
Granted: Nov 16, 1993
Filed: Oct 22, 1992
Inventors
Katsuro Kuroki
Yasunari Yoshitomi
Hiroaki Masui
Tsutomu Haratani
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.