Sumitomo Osaka Cement has been granted a patent for a composite sintered body comprising a metal oxide, silicon carbide, and metal element silicate. The average aggregation diameter of the silicate is limited to 5 µm or lower. GlobalData’s report on Sumitomo Osaka Cement gives a 360-degree view of the company including its patenting strategy. Buy the report here.
According to GlobalData’s company profile on Sumitomo Osaka Cement, Electrode active materials was a key innovation area identified from patents. Sumitomo Osaka Cement's grant share as of May 2024 was 45%. Grant share is based on the ratio of number of grants to total number of patents.
Composite sintered body with specific silicate aggregation diameter
A recently granted patent (Publication Number: US11990362B2) discloses a composite sintered body that includes a metal oxide as the main phase, silicon carbide as a sub-phase, and silicate of a metal element present in the metal oxide. The patent specifies that the average aggregation diameter of the silicate should be 5 µm or lower within a specific field of view. Additionally, the composite sintered body should have a ratio of silicate area to the total area of metal oxide and silicon carbide of 30% or less. The patent also outlines requirements for the hardness and Young's modulus of the aggregated silicate portion.
Moreover, the patent details a method for manufacturing the composite sintered body, involving steps such as pre-oxidation of silicon carbide particles, pH adjustment of the slurry, granule formation, and pressure-sintering. The resulting composite sintered body exhibits specific dielectric properties, with a relative dielectric constant of 10 or higher and a dielectric loss tangent of 0.04 or lower within a defined temperature range. Crystal grain dispersion and size specifications for both the metal oxide and silicon carbide components are also provided in the patent, along with the inclusion of silicate in the composite sintered body. The patent further extends to the use of the composite sintered body in electrostatic chuck members and devices, emphasizing its suitability for high-temperature applications.
To know more about GlobalData’s detailed insights on Sumitomo Osaka Cement, buy the report here.
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