公开(公告)号：US20200086680A1

公开(公告)日：2020-03-19

申请号：US16467725

申请日：2017-12-08

Applicant: KOREA INSTITUTE OF INDUSTRIAL TECHNOLOGY

Inventor： Hyo Soo LEE ,  Hyeong Won SHIN ,  Yeo Reum LEE

IPC: B44F9/10 ,  B44C5/04 ,  B44C1/14 ,  C23C14/08 ,  C23C14/34 ,  C23C14/04

Abstract: Disclosed herein is a colored metal that includes a metal substrate containing a first metal, an oxidation degree control pattern positioned on the metal substrate, and increasing or decreasing a degree of oxidation of the first metal over time, and a coating film positioned on the metal substrate where the oxidation degree control pattern is positioned, wherein a first region of the metal substrate where the oxidation degree control pattern is present thereon and a second region of the metal substrate where the oxidation degree control pattern is not present thereon exhibit different colors due to a difference in degree of oxidation over time.