国家/地区 世界知识产权组织（2）
IPC部
IPC大类
IPC小类
IPC
发明人 LEE S（2）
公开年 2020（2）
申请年 2019（2） 
专利权人

Manufacture of graphene oxide used in e.g. filter for water purification, involves placing purified coal powder in mild oxidation atmosphere at elevated temperature with respect to room temperature for preset time period.

MAHAJAN R L, LEE S

Reduced graphene oxide useful in electrochemical device, has specified percentage of total specific surface area of pores measured by Barrett-Joyner-Halenda method.

LEE J H, PARK H S, LEE S G, LIM J C, HYUN L J, HUNSOO P, LEE S, LIM J