Sumitomo Metal Mining had 94 patents in batteries during Q2 2024. Sumitomo Metal Mining Co Ltd filed patents in Q2 2024 for methods and systems related to electric furnaces for metal production, specifically focusing on the recovery of valuable metals from waste lithium ion batteries. The inventions involve processes such as melting, slag separation, and oxidation purification to efficiently separate metals like cobalt and manganese from raw materials. Additionally, a method for producing a nickel-containing composite hydroxide as a precursor for positive-electrode active materials in nonaqueous-electrolyte secondary batteries was also patented. GlobalData’s report on Sumitomo Metal Mining gives a 360-degree view of the company including its patenting strategy. Buy the report here.

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Sumitomo Metal Mining had no grants in batteries as a theme in Q2 2024.

Recent Patents

Application: Electric furnace and method for producing valuable metal (Patent ID: US20240200873A1)

The patent filed by Sumitomo Metal Mining Co Ltd describes an electric furnace designed for heating and melting raw materials to generate a molten material consisting of slag and metal. The furnace is configured to have a lower overall heat transfer coefficient on the side wall in contact with the metal layer formed at the bottom compared to the side wall in contact with the slag layer formed at the top due to gravity separation within the molten material. Additionally, the furnace includes features such as a metal hole for discharging the metal and specific layers within the side wall structure.

Furthermore, the patent also outlines a method for producing valuable metals, specifically copper, from raw materials such as waste lithium-ion batteries using the electric furnace described in the claims. The method involves a reduction melting step to obtain a molten material with specific thickness ratios between the slag and metal layers, ensuring a certain copper content in the final product. The process also includes temperature parameters for the metal and slag during the reduction melting treatment. Overall, the patent focuses on an innovative electric furnace design and method for efficient production of valuable metals from various raw materials.

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GlobalData Patent Analytics tracks bibliographic data, legal events data, point in time patent ownerships, and backward and forward citations from global patenting offices. Textual analysis and official patent classifications are used to group patents into key thematic areas and link them to specific companies across the world’s largest industries.