专利检索 ap:("KOREA MINTING, SECURITY PRINTING & ID CARD OPERATING CORP.") AND inv:"Su Dong Kim" 第 1 页

1.

发明授权
Security device using light reflection property 有权

公开(公告)号：US11590792B2

公开(公告)日：2023-02-28

申请号：US17278253

申请日：2019-08-27

申请人： KOREA MINTING, SECURITY PRINTING & ID CARD OPERATING CORP.

发明人： Won Gyun Choe , Su Dong Kim , Hong Keon Kim , Hyun Soo Kim , E Den Kim , Hye Jun Choi

IPC分类号： B42D25/378 , B42D25/373 , B42D25/364 , G02B5/28 , B42D25/41

摘要： The present invention relates to a security device comprising a colloidal crystal which exhibits excellent visibility and is also easily manufactured. The security device, according to the present invention, comprises: a substrate; a groove part formed on the substrate; a colloidal crystal positioned in the groove part; and an aging film. The security device, according to the present invention, exhibits excellent security and visibility, and thus may be used for securities, credit cards, security cards, anti-forgery products, etc.

2.

发明申请
PHOTONIC CRYSTAL FILM, METHOD FOR MANUFACTURING SAME, AND ANTI-FORGERY ARTICLE COMPRISING SAME 有权

公开(公告)号：US20210107311A1

公开(公告)日：2021-04-15

申请号：US16606452

申请日：2018-04-18

申请人： KOREA MINTING, SECURITY PRINTING & ID CARD OPERATING CORP.

发明人： Shin-hyun Kim , Gun Ho Lee , Won Gyun; Choe , Su Dong Kim , Ju Hee Kang , Hong Keon Kim , Hyun Soo Kim , E Den Kim

IPC分类号： B42D25/29 , G02B1/00 , B29D7/01 , B32B27/18 , B42D25/36 , C08J5/18 , G02B1/04

摘要： A photonic crystal film, a method for manufacturing the photonic crystal film, and an anti-forgery article comprising the photonic crystal film are disclosed. The photonic crystal film includes a polyurethane-based polymer matrix and colloidal particles dispersed in the polyurethane-based polymer matrix and arranged in a crystal lattice structure. The colloidal particles includes one or more selected from metal nanoparticles, metal oxide nanoparticles, organic nanoparticles, and carbon structure nanoparticles.