MUMBAI, India, July 24 -- Intellectual Property India has published a patent application (202647085736 A) filed by Posco Co. , Ltd on July 13, 2026, for Electrical Steel Sheet For Electromagnetic Wave Shielding And Manufacturing Method Therefor.
Inventors include Han, Minsoo; Kwon, Moonjae; Ko, Hyunseok Wo No; Kim, Jae Hyung; Kwon, Yunik Application Number; and Lee, Jimin.
The application for the patent was published on July 17, 2026, under issue no. 29/2026.
Abstract: An electrical steel sheet for electromagnetic wave shielding, according to one embodiment of the present invention, comprises: a steel sheet base; and a film positioned on a surface of the steel sheet base, wherein, among all grains in the surface of the steel sheet base, the grains having a ratio (D2/D1) of the diameter (D2) of an inscribed circle to the diameter (D1) of a circumscribed circle of 0.5 or greater constitute 70 area% or greater, the average grain size in the surface portion, which is the portion from the surface of the steel sheet base to less than 1/4 of the thickness of the steel sheet base in the thickness direction, is 80 to 500 µm, the average grain size in the center portion, which is the 1/4 to 1/2 portion of the thickness of the steel sheet base, is 50 µm or smaller, and the film comprises a fluoroolefin-based resin.
Disclaimer: Curated by HT Syndication.
