GENEVA, Dec. 9 -- TOKUYAMA CORPORATION (1-1, Mikage-cho, Shunan-shi, Yamaguchi7458648), 株式会社トクヤマ (山口県周南市御影町1番1号), SHINSHU UNIVERSITY (3-1-1, Asahi, Matsumoto City, Nagano3908621), 国立大学法人信州大学 (長野県松本市旭三丁目1番1号) filed a patent application (PCT/JP2025/019395) for "POLYVINYL CHLORIDE FIBER, FABRIC INCLUDING SAID POLYVINYL CHLORIDE FIBER, METHOD FOR PRODUCING POLYVINYL CHLORIDE FIBER, AND ION EXCHANGE MEMBRANE" on May 28, 2025. With publi...