Nippon Soda Co. Ltd.
Patent: US6818631 B1, 2004 ;
Location in patent: Page column 13; 14 ;

Nakagawa, Yuki; Bobrov, Sergey; Semer IV, Charles R.; Kucharek, Thomas A.; Hamamoto, Masahiro
Patent: US2005/38041 A1, 2005 ;