MUMBAI, India, Nov. 14 -- Intellectual Property India has published a patent application (202517097084 A) filed by Nippon Steel Corporation, Tokyo, on Oct. 8, for 'insulating coating film treatment liquid for grain-oriented electromagnetic steel sheet and method for producing grain-oriented electromagnetic steel sheet.'
Inventor(s) include Takatani, Shinsuke; and Takeda, Kazutoshi.
The application for the patent was published on Nov. 14, under issue no. 46/2025.
According to the abstract released by the Intellectual Property India: "This method for producing an insulating coating film treatment liquid for a grain-oriented electromagnetic steel sheet includes: an adjustment step of adding a K compound to colloidal silica, and adjusting a K2O/SiO2 ratio in mass% between the K amount in terms of K2O in the colloidal silica and the Si amount in terms of SiO2 to 0.5% to 10%; and a mixing step of mixing the colloidal silica in which the K2O/SiO2 ratio has been adjusted, without adding a chromic acid salt, and a metal phosphate salt(s) of one or more metals selected from Al, Fe, Mg, Mn, Ni, Zn, Co, Mo, V, W, and Zr."
The patent application was internationally filed on Apr. 05, 2024, under International application No.PCT/JP2024/014018.
Disclaimer: Curated by HT Syndication.
