MUMBAI, India, Nov. 21 -- Intellectual Property India has published a patent application (202517097003 A) filed by Nippon Steel Corporation, Tokyo, on Oct. 8, for 'method for producing insulation coating treatment liquid for grain-oriented electrical steel sheet and method for producing grain-oriented electrical steel sheet.'
Inventor(s) include Takatani Shinsuke; and Takeda Kazutoshi.
The application for the patent was published on Nov. 21, under issue no. 47/2025.
According to the abstract released by the Intellectual Property India: "This method for producing an insulating film treatment liquid for grain-oriented electromagnetic steel sheet comprises: an adjustment step in which an Na compound is added to colloidal silica, and the ratio of the Na content in terms of Na2O in the colloidal silica to the Si content in terms of SiO2, i.e., Na2O/SiO2, is adjusted to 0.5-10% in mass%; and a mixing step in which the colloidal silica with the adjusted Na2O/SiO2 ratio and a phosphate metal salt of one or more metals selected from Al, Fe, Mg, Mn, Ni, Zn, Co, Mo, V, W, and Zr are mixed together."
The patent application was internationally filed on Apr. 05, 2024, under International application No.PCT/JP2024/014016.
Disclaimer: Curated by HT Syndication.
