Idemitsu Kosan had 21 patents in batteries during Q4 2023. Idemitsu Kosan Co Ltd filed patents in Q4 2023 related to the production of high-purity lithium hydroxide from lithium ion extracts using a Li permselective membrane, sulfide solid electrolyte glass ceramics with high ionic conductivity and water resistance, a method for producing atomization sulfide solid electrolyte for lithium ion batteries, and a production method for sulfide solid electrolyte to prevent generation of hydrogen sulfide gas while maintaining ionic conductivity. GlobalData’s report on Idemitsu Kosan gives a 360-degreee view of the company including its patenting strategy. Buy the report here.
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Idemitsu Kosan grant share with batteries as a theme is 0% 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 hydroxide (Patent ID: US20230406718A1)
The patent filed by Idemitsu Kosan Co Ltd. describes a method for efficiently producing high-purity lithium hydroxide from lithium ion extracts of processed lithium secondary batteries. The method involves using a Li permselective membrane to recover Li ions in a recovery liquid, which is then used to produce lithium hydroxide. The process includes controlling the temperature of the recovery liquid during Li ion recovery and subsequent separation of lithium hydroxide, with specific temperature ranges and crystallization methods outlined in the claims.
The patent also details a lithium hydroxide production apparatus equipped with a Li ion recovery tank, recovery liquid storage tank, temperature controlling device, and separation device for efficient production. The apparatus includes features such as a crystallization device for separation, a filtrate recovery device for adding filtrate to the recovery liquid, and specific temperature control methods to optimize the production process. Overall, the patent aims to streamline the production of high-purity lithium hydroxide from lithium ion extracts while minimizing energy consumption and maximizing efficiency through controlled processes and specialized equipment.
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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.
