Sato, Seiichi; Futaki, Fumie; Yasuda, Reiko; Eto, Sachise; Suzuki, Yumiko; Tajima, Takaho; Eto, Yuzuru; Tahara, Yuki Patent: US2012/282386 A1, 2012 ; Location in patent: Page/Page column 15 ; US 20120282386 A1