国家/地区 韩国（2）
IPC部 B（2）
IPC大类 B01（2）
IPC小类 B01D（2）
IPC B01D021/01（2）
发明人 NA D H（2）
公开年 2014（2）
申请年 2012（2） 
专利权人 HANWHA TECHW.（2） SAMSUNG TECH.（2）

Apparatus, useful to remove e.g. copper from graphene sheet, includes circulation part in which cleaning solution is directly supplied to catalyst metal of graphene sheet along direction parallel to transferring direction of auxiliary tank.

NA D H

Apparatus of removing catalyst metal on graphene sheet used as transparent electrode film of e.g. flexible display, controls holder to exercise in the state that is completely sunk under catalyst metal cleaning solution.

YOON J H, NA D H