Toyo Tire‘s patent provides a rubber composition for anti-vibration rubber, balancing low dynamic magnification and high dampening properties. The composition includes 15-25 parts of polystyrene butadiene rubber and 75-85 parts of natural rubber or polyisoprene rubber. The polystyrene butadiene rubber has a glass transition temperature of -15 to 20°C and a mass average molecular weight of 1,000,000 or more. GlobalData’s report on Toyo Tire 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 Tire, Anti-skid tyre treads was a key innovation area identified from patents. Toyo Tire's grant share as of February 2024 was 83%. Grant share is based on the ratio of number of grants to total number of patents.

A recently granted patent (Publication Number: US11912866B2) discloses a rubber composition designed for anti-vibration rubber applications. The composition includes 15 to 25 parts by mass of polystyrene butadiene rubber and 75 to 85 parts by mass of natural rubber or polyisoprene rubber. The polystyrene butadiene rubber specified in the patent has a glass transition temperature ranging from -15 to 20°C and a mass average molecular weight of 1,000,000 or more.

Furthermore, the patented rubber composition for anti-vibration rubber also includes silica and carbon black in specific proportions. Specifically, the composition comprises 100 parts by mass of the rubber component, 20 to 40 parts by mass of silica, and 5 to 15 parts by mass of carbon black. The resulting anti-vibration rubber, formed through vulcanization of this composition, exhibits a peak of tan d in a temperature range of 10°C or more, as outlined in the patent claims.

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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.