The patent badge is an abbreviated version of the USPTO patent document. The patent badge does contain a link to the full patent document.
The patent badge is an abbreviated version of the USPTO patent document. The patent badge covers the following: Patent number, Date patent was issued, Date patent was filed, Title of the patent, Applicant, Inventor, Assignee, Attorney firm, Primary examiner, Assistant examiner, CPCs, and Abstract. The patent badge does contain a link to the full patent document (in Adobe Acrobat format, aka pdf). To download or print any patent click here.
Patent No.:
Date of Patent:
Jan. 13, 2004
Filed:
Jul. 30, 2002
Applicant:
Inventors:
Minoru Takashima, Kurashiki, JP;
Tetsuo Toge, Kurashiki, JP;
Yasuyuki Hayakawa, Kurashiki, JP;
Mitsumasa Kurosawa, Kurashiki, JP;
Michiro Komatsubara, Kurashiki, JP;
Assignee:
JFE Steel Corporation, , JP;
Attorney:
Primary Examiner:
Int. Cl.
CPC ...
H01F 1/00 ; H01F 1/04 ;
U.S. Cl.
CPC ...
H01F 1/00 ; H01F 1/04 ;
Abstract
Manufacturing a grain-oriented electrical steel sheet, a secondary recrystallization step and a forsterite coating forming step are separated into first batch annealing for developing secondary recrystallization and second batch annealing for forming a forsterite coating, with continuous annealing performed between these two steps of batch annealing, to produce a grain-oriented electrical steel sheet that is superior in both magnetic characteristics and coating characteristics.