Mitsui Mining & Smelting had 13 patents in batteries during Q4 2023. Mitsui Mining & Smelting Co Ltd filed patents in Q4 2023 for a method to produce high-purity lithium sulfide by reducing raw materials containing lithium and sulfur elements. Another patent involves an active material with a core and coating portion containing elements like titanium, zirconium, tantalum, niobium, or aluminum, showing multiple inflection points in a first-order derivative related to the element A peak. GlobalData’s report on Mitsui Mining & Smelting gives a 360-degreee view of the company including its patenting strategy. Buy the report here.

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Mitsui Mining & Smelting grant share with batteries as a theme is 30% in Q4 2023. Grant share is based on the ratio of number of grants to total number of patents.

Recent Patents

Application: Method for producing lithium sulfide (Patent ID: US20230343996A1)

The patent filed by Mitsui Mining & Smelting Co Ltd. describes a method for producing high-purity lithium sulfide. The method involves two steps: first, reducing a raw material containing lithium and sulfur using a reductant containing carbon to obtain an intermediate, and second, reducing the intermediate using a reducing gas to obtain lithium sulfide. The process is preferably carried out in inert gas atmospheres at specific temperature ranges for each step to ensure optimal results.

Furthermore, the patent includes specific claims related to the method, such as controlling the X-ray diffraction pattern of the intermediate and lithium sulfide to achieve desired intensities at specific peaks. The method also allows for the production of lithium sulfide at high temperatures within defined ranges, ensuring the purity and quality of the final product. Additionally, the patent extends to the production of a solid electrolyte by incorporating the lithium sulfide into a composition with phosphorus pentasulfide and lithium halide, followed by firing to create a solid electrolyte with a specific crystal structure. Overall, the patent outlines a comprehensive method for producing lithium sulfide with high purity and quality, along with its application in solid electrolyte production.

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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.