GENEVA, March 31 -- WASEDA UNIVERSITY (104 Totsukamachi 1-chome, Shinjuku-ku, Tokyo1698050), 学校法人早稲田大学 (東京都新宿区戸塚町1丁目104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/JP2025/033113) for "CO-PRODUCTION METHOD AND CO-PRODUCTION FACILITY FOR HIGH-CONCENTRATION METHANE-CONTAINING BIOGAS AND CARBO...