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. 14, 2010
Filed:
Jul. 14, 2005
Osamu Tanaka, Kitakyushu, JP;
Norikazu Fujii, Kitakyushu, JP;
Hiroyasu Fujii, Kitakyushu, JP;
Kazutoshi Takeda, Himeji, JP;
Osamu Tanaka, Kitakyushu, JP;
Norikazu Fujii, Kitakyushu, JP;
Hiroyasu Fujii, Kitakyushu, JP;
Kazutoshi Takeda, Himeji, JP;
Nippon Steel Corporation, Tokyo, JP;
Nittetsu Plant Designing Corporation, Fukuoka, JP;
Abstract
The present invention provides a grain-oriented electrical steel sheet product having a superior corrosion resistance, annealing resistance, film tension, and the like in insulating treatment based on a phosphate not containing chromium and a treatment agent for the same, so provides grain-oriented electrical steel sheet having an insulating film not containing chromium characterized by the insulating film containing a phosphate and one or more compounds selected from inorganic compounds of Fe, Ni, Co, Cu, Sr, and Mo in an amount, as metal elements, of 0.06 to 2.10 moles per mole of phosphate, and an insulating film agent of the same.