"Ryota Seto,Takahiro Kojima,Katsumoto Hosokawa,Yasuhito Koyama,Gen-ichi Konishi,Toshikazu Takata","Synthesis and Property of 9,9-Spirobifluorene-containing Aromatic Polyesters as Optical Polymers with High Refractive Index and Low Birefringence",,"Polymer",,"Vol. 51",,"pp. 4744-4749",2010,June "Ryota Seto,takashi sato,takahiro kojima,katsumoto hosokawa,Yasuhito Koyama,Gen-ichi Konishi,Toshikazu Takata","9,9’-Spirobifluorene-Containing Polycarbonates: Transparent Polymers with High Refractive Index and Low Birefringence",,"Journal of Polymer Science Part A: Polymer Chemistry",,,,,2010,Mar. "Toshihide Hasegawa,Yasuhito Koyama,Ryota Seto,Takahiro Kojima,katsumoto hosokawa,Toshikazu Takata","Diphenolic 9,9-Diarylfluorene Trimers and Derivatives Possessing Flexible Alkylene Chain Spacers: Synthesis of the Monomers, Their Polymerization, and Properties of the Resulting Polymers",,"Macromolecules","ACS","Vol. 43",,"pp. 131-136",2010,Jan. "高田十志和,細川勝元","ナフタレン骨格を有する新規芳香族ジアミン化合物、及びそれからなる重合体",,"特願2007-000000",,,,,2007,Sept.