SK Innovation had 207 patents in batteries during Q4 2023. SK Innovation Co Ltd filed patents related to lithium secondary batteries, including negative electrode manufacturing methods, recycling lithium precursors, and recovering valuable metals from battery components. These patents focus on optimizing electrode materials, improving recycling processes, and reducing waste through efficient recovery methods. GlobalData’s report on SK Innovation gives a 360-degreee view of the company including its patenting strategy. Buy the report here.
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SK Innovation grant share with batteries as a theme is 20% in Q4 2023. Grant share is based on the ratio of number of grants to total number of patents.
Recent Patents
Application: Negative electrode for lithium secondary battery and method of manufacturing the same (Patent ID: US20230420666A1)
The patent filed by SK Innovation Co Ltd. pertains to a negative electrode for a lithium secondary battery and a method of manufacturing the same. The negative electrode active material includes silicon oxide, lithium, and sodium or potassium, with specific content requirements based on ICP analysis. The relations defined in the claims ensure the appropriate composition of elements in the negative electrode active material layer, contributing to the efficiency and performance of the lithium secondary battery.
The method of manufacturing the negative electrode involves processes such as pre-lithiation, mixing of silicon-based materials with lithium and sodium or potassium precursors, and heat treatment to create a negative electrode active material doped with the desired elements. Specific ratios and conditions are outlined for each step of the manufacturing process to achieve the optimal composition and characteristics of the negative electrode. Overall, the patent focuses on enhancing the performance and stability of lithium secondary batteries through the precise control of element composition in the negative electrode active material, ultimately leading to improved battery efficiency and longevity.
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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.
