Patent 金属の表面処理法 森園靖浩, 連川貞弘, 迫達也, 根本洋之, 河野友香 Application no. 特願2011-551720 Date applied Announcement no. 特開WO2011/092998 Date announced Patent/Registration no. 特許5927646 Date registered Date issued May 13, 2016