Stock material or miscellaneous articles – Composite – Of b – n – p – s – or metal-containing material
Reexamination Certificate
2005-11-07
2010-06-01
Zimmerman, John J. (Department: 1794)
Stock material or miscellaneous articles
Composite
Of b, n, p, s, or metal-containing material
C148S537000, C148S320000, C148S113000, C148S111000, C148S122000
Reexamination Certificate
active
07727644
ABSTRACT:
In a grain-oriented electrical steel sheet having phosphate-based coatings, which contain no chromium and which impart a tension, on the surfaces of a steel sheet with ceramic underlying films therebetween, the coating amount of oxygen in the underlying film is 2.0 g/m2or more and 3.5 g/m2or less relative to both surfaces of the steel sheet. Consequently, a grain-oriented electrical steel sheet with a chromium-less coating is provided. The resulting steel sheet has coating properties at the same level as those of a steel sheet with chromium-containing coatings and realizes high hygroscopicity resistance and a low iron loss without variations.
REFERENCES:
patent: 5565272 (1996-10-01), Masui et al.
patent: 5725681 (1998-03-01), Ishitobi et al.
patent: 2002/0000265 (2002-01-01), Toda et al.
patent: 2004/0074565 (2004-04-01), Hayakawa et al.
patent: 2004/0231752 (2004-11-01), Nanba et al.
patent: 53-28375 (1978-03-01), None
patent: 56-52117 (1981-05-01), None
patent: 57-9631 (1982-01-01), None
patent: 7-18064 (1995-01-01), None
patent: 9-78131 (1997-03-01), None
patent: 11-241120 (1999-09-01), None
patent: 2000-169972 (2000-06-01), None
patent: 2000-169973 (2000-06-01), None
patent: 2000-178760 (2000-06-01), None
patent: 2004-143564 (2004-05-01), None
Muraki Mineo
Toda Hiroaki
Watanabe Makoto
DLA Piper (LLP) US
JFE Steel Corporation
Katz Vera
Zimmerman John J.
LandOfFree
Grain-oriented electrical steel sheet and method for... does not yet have a rating. At this time, there are no reviews or comments for this patent.
If you have personal experience with Grain-oriented electrical steel sheet and method for..., we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Grain-oriented electrical steel sheet and method for... will most certainly appreciate the feedback.
Profile ID: LFUS-PAI-O-4210507