Mitsubishi Paper Mills has patented a coating solution for lithium ion battery separators, including inorganic particles and carboxymethyl cellulose, providing high safety and low internal resistance. The solution features magnesium hydroxide with specific absorption properties. GlobalData’s report on Mitsubishi Paper Mills gives a 360-degree view of the company including its patenting strategy. Buy the report here.
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According to GlobalData’s company profile on Mitsubishi Paper Mills, Corrosion resistant battery packaging was a key innovation area identified from patents. Mitsubishi Paper Mills's grant share as of January 2024 was 14%. Grant share is based on the ratio of number of grants to total number of patents.
A recently granted patent (Publication Number: US11881595B2) discloses a coating solution designed for lithium ion battery separators. The solution is utilized in the production of a lithium ion battery separator, consisting of a substrate and a coating layer containing inorganic particles. Specifically, the inorganic particles in the coating layer comprise magnesium hydroxide with a linseed oil absorption ranging from 30 to 80 (g/100 g). This unique formulation aims to enhance the performance and efficiency of lithium ion batteries by improving the properties of the separator.
Furthermore, the patent claims also cover the specific configuration of the lithium ion battery separator, where the substrate is identified as a nonwoven fabric. The coating layer, containing magnesium hydroxide with the specified linseed oil absorption, is formed on at least one side of the substrate. This design choice further contributes to the overall effectiveness of the lithium ion battery separator. By detailing the composition and structure of the separator, the patent provides valuable insights for manufacturers and researchers in the battery technology industry looking to optimize the performance of lithium ion batteries.
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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.
