The patent badge is an abbreviated version of the USPTO patent document. The patent badge does contain a link to the full patent document.
The patent badge is an abbreviated version of the USPTO patent document. The patent badge covers the following: Patent number, Date patent was issued, Date patent was filed, Title of the patent, Applicant, Inventor, Assignee, Attorney firm, Primary examiner, Assistant examiner, CPCs, and Abstract. The patent badge does contain a link to the full patent document (in Adobe Acrobat format, aka pdf). To download or print any patent click here.
Patent No.:
Date of Patent:
Feb. 28, 2023
Filed:
Aug. 27, 2019
Korea Minting, Security Printing & ID Card Operating Corp., Daejeon, KR;
Won Gyun Choe, Daejeon, KR;
Su Dong Kim, Daejeon, KR;
Hong Keon Kim, Daejeon, KR;
Hyun Soo Kim, Daejeon, KR;
E Den Kim, Daejeon, KR;
Hye Jun Choi, Daejeon, KR;
Abstract
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.