US Patent Issued to Sumitomo Osaka Cement, Kyoto University on Sept. 1 for "Pigment and method for producing same, solution, metal hydroxyl amount evaluation method, and metal hydroxyl processing rate evaluation method" (Japanese Inventors)

ALEXANDRIA, Va., Sept. 1 -- United States Patent no. 12,723,158, issued on Sept. 1, was assigned to Sumitomo Osaka Cement Co. Ltd. (Tokyo) and Kyoto University (Kyoto, Japan).

"Pigment and method for producing same, solution, metal hydroxyl amount evaluation method, and metal hydroxyl processing rate evaluation method" was invented by Kazuo Tanaka (Kyoto, Japan), Masayuki Gon (Kyoto, Japan), Yoshiki Chujo (Kyoto, Japan), Ryo Takeda (Tokyo), Tomomi Ito (Tokyo) and Kenji Harada (Tokyo).

According to the abstract* released by the U.S. Patent & Trademark Office: "A pigment of the present invention is a compound represented by General Formula (1) or General Formula (2)(in the above-described formulae, M is Sn or Ge, X is C or N, R1 is an alkyl...