国家/地区 世界知识产权组织（3）
IPC部 C（3）
IPC大类 C21（3） B32（2）
IPC小类 C21D（3）
IPC C21D008/02（3）
发明人
公开年
申请年 2022（2） 
专利权人 POSCO（2）

High-strength steel plate comprises base steel plate, and ferrite layer having internal oxide layer on which iron-nickel alloy layer is formed with excellent surface quality formed in internal oxide layer from surface of ferrite layer.

LEE K, LEE C, KANG K, KIM N, JANG Y, LEE J, KANG K C, KIMNAMAH, JANG Y M

Electrical steel used as strip e.g. steel sheets, comprises functional layer comprising ferromagnetic material and additional layer comprising non-magnetizable material, which are connected by adhesive bond with atomic diffusion.

FRANKEN C, PLATT J

Graphene coated sheet for surface-treated steel plate used in e.g. car material, has graphene layer that is formed on steel sheet structure.

HWANG C C, JUNG Y G, HWANG H N, JEONG J I, YANG J H, JUNG Y, JEONG J, YANG J, HWANG H, HWANG C, GUK H C, IN J J, HUN Y J, GYUN J Y, NA H H