Toyo Seikan Group has been granted a patent for a product containing nanocellulose with specific chemical groups derived from treatments, suitable for various applications. The product includes a mixture of polyethyleneimine and cellulose nanocrystal on a substrate, with precise composition requirements. GlobalData’s report on Toyo Seikan Group 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 Toyo Seikan Group, Fuel cell powered drones was a key innovation area identified from patents. Toyo Seikan Group's grant share as of February 2024 was 50%. Grant share is based on the ratio of number of grants to total number of patents.
Cellulose nanocrystal product with specific chemical groups
A recently granted patent (Publication Number: US11905340B2) discloses a product that includes a substrate with a layer of a mixture of polyethyleneimine and cellulose nanocrystal. The cellulose nanocrystal in the mixture contains sulfuric acid and/or sulfo groups derived from a sulfuric acid treatment, along with an anionic functional group from a hydrophilization treatment. The total amount of these groups in the cellulose nanocrystal ranges from 0.3 to 1.3 mmol/g, with specific ratios of cellulose nanocrystal and polyethyleneimine per square meter of the substrate.
Furthermore, the product may contain cellulose nanocrystals with specific fiber width and aspect ratio ranges, or cellulose nanofibers meeting certain dimensional criteria. The cellulose nanocrystals are produced using a method that involves a hydrophilization treatment with various agents like carbodiimide or sulfuric acid. Additionally, the cellulose nanocrystals exhibit a self-organization structure, enhancing their properties in the final product. Overall, the patented product showcases a unique combination of materials and treatments to achieve specific characteristics and structures, potentially offering advantages in various applications requiring such properties.
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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.
