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:
Dec. 30, 2008
Filed:
Apr. 28, 2004
Wataru Ohashi, Chiba, JP;
Akihito Kiyose, Chiba, JP;
Masafumi Miyazaki, Chiba, JP;
Takeshi Kubota, Chiba, JP;
Yousuke Kurosaki, Chiba, JP;
Yoshihiro Arita, Fukuoka, JP;
Ken-ichiro Miyamoto, Chiba, JP;
Takashi Sawai, Chiba, JP;
Wataru Ohashi, Chiba, JP;
Akihito Kiyose, Chiba, JP;
Masafumi Miyazaki, Chiba, JP;
Takeshi Kubota, Chiba, JP;
Yousuke Kurosaki, Chiba, JP;
Yoshihiro Arita, Fukuoka, JP;
Ken-ichiro Miyamoto, Chiba, JP;
Takashi Sawai, Chiba, JP;
Nippon Steel Corp., Tokyo, JP;
Abstract
A non-oriented electrical steel sheet is characterized in that the number density of inclusions with an equivalent volume diameter of less than 100 nm contained in the steel sheet is 1×10[/mm] or less, and that the steel sheet contains, by mass %, C: up to 0.01%, Si: 0.1% to 7.0%. Al: 0.1% to 3.0%. Mn: 0.1% to 2.0%, REM: 0.0003% to 0.05%. Ti: up to 0.02%. S: up to 0.005%. and N: up to 0.005%. the balance Fe and inevitable impurities and the mass % of Al represented by [Al] and the mass % of Ti represented by [Ti] satisfy the equation log([Ti]×[N])−1.19×log([Al]×[N])+1.84>0 . . . (1).