参考文献

KUREHA CORPORATION; SUDO, Keiichi; SHIMOKAWARA, Takashi; IMAI, Eiyu; KUSANO, Nobuyuki; KANNO, Hisashi; MIYAKE, Taiji; MORI, Masaru; SAISHOJI, Toshihide Patent: WO2011/70742 A1, 2011 ; Location in patent: Page/Page column 76 ;