GENEVA, March 25 -- DENKA AZUMIN COMPANY LIMITED (5-118, Nimaibashi, Hanamaki-shi, Iwate0250312), デンカアヅミン株式会社 (岩手県花巻市二枚橋第5地割118番地), DENKA COMPANY LIMITED (1-1, Nihonbashi-Muromachi 2-chome, Chuo-ku, Tokyo1038338), デンカ株式会社 (東京都中央区日本橋室町二丁目1番1号) filed a patent application (PCT/JP2024/032036) for "IRON REDUCING AGENT CONTAINING HUMIC ACID EXTRACT, USE OF HUMIC ACID EXTRACT,...