MUMBAI, India, Oct. 5 -- Intellectual Property India has published a patent application (202541030191 A) filed by International Advanced Research Centre For Powder Metallurgy And New Materials Arci; and Ashvini Magnets Private Limited on March 28, 2025, for An Anisotropic Ferrite Powder, A Method Of Producing The Same, And Uses Thereof.
Inventors include Delhi Babu Prabhu; Vishal Viswanadh Beeraka; Shravan Kumar Subramanian; Neha Yeshwanta Hebalkar; Vikram Ajit Dhoot; Bhaskar Singh; Raghavan Gopalan; and Ravula Vijay.
The application for the patent was published on October 02, 2026, under issue no. 40/2026.
Abstract: The invention relates to anisotropic ferrite powder used for producing a bonded magnet, a method for producing the same, and a bonded magnet containing the same. Accordingly, the present invention relates to a method of producing anisotropic Strontium Hexaferrite (SFO) powder using a cationic surfactant, which comprises the steps of a) mixing raw materials for strontium hexaferrite to prepare a raw material mixture comprising precursors; b) calcining the raw material mixture in atmospheric air, followed by subsequent pH-adjusted wet pulverization in potable water containing a cationic surfactant to obtain a preliminary granular powder; c) annealing the granular powder from step b) to eliminate unwanted strains present in the granular powder to obtain annealed granular powder; and d) dispersing the annealed granular powder from step c) with water containing a cationic surfactant at pH 6 – 7 for 10-20 minutes, followed by drying the same to obtain the highly-square anisotropic SFO powder.
Disclaimer: Curated by HT Syndication.
