Korea Minting, Security Printing Id Card Operating Corp

Nano Cms Co., Ltd.

Korea Minting & Security Printing Corporation

Won Gyun Choe

Hyun Soo Kim

Hong Keon Kim

Soo Dong Kim

E Den Kim

Ju Hee Kang

Hye Jun Choi

Su Dong Kim

Shi Surk Kim

Hyun Mi Kim

Jin Ho Ryu

Gun Ho Lee

Shin-hyun Kim

Won Gyu Lim

Hyeong Seok Jang

Sun Hong Yoon

Jong Won Yu

Dong Hoon Shin

Sang Geun Lee

Ku Won Seo

Kyung Mi Lee

Shi-Surk Kim

The present invention can provide light-colored magnetic particles having a zirconium oxide coating layer formed on a magnetic core, and having a silver coating layer formed on the zirconium oxide coating layer, and a part of the surface of the zirconium oxide coating layer is exposed to the outside, but chemical resistance is excellent, and thus the magnetic particles hardly cause a change of magnetic characteristics so as to be suitable for security elements.

Light-colored magnetic particles having improved durability and chemical resistance

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.

Security device using light reflection property

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.

Photonic crystal film, method for manufacturing same, and anti-forgery article comprising same

The present invention relates to a magnetic particle having a high-reflective protective membrane and a method for producing same, especially wherein the magnetic particle includes a magnetic core, a shell formed on the magnetic core, and a high-reflective protective membrane formed on the shell, and the high-reflective protective membrane has low-refractive-index and high-refractive-index membranes. The magnetic particle has advantages that have high brightness and prevent the shell from being damaged by friction with a filler and pressure between rollers during a dispersion step of an ink-making process. Also, the magnetic particle is used for different colored inks, general paint, particulate pigments for vehicles, pigments for cosmetics, catalyst paint, and especially anti-forgery inks, etc., and has advantages that are durable and express colors that existing magnetic pigments fail to.

Magnetic particle having high-reflective protective membrane and method for producing same

An electromagnetic bandgap (EBG) pattern structure includes a nonconductive substrate and a pattern assembly formed on the substrate. The EBG pattern structure also includes regularly arranged closed-loop patterns and open-loop patterns, both of which are made of a conductive material. The EBG pattern structure can be used to manufacture new security products by applying its frequency characteristics to securities or IDs and variously used in security technologies for preventing forgery and alteration because various security codes can be created by adjusting the variables of its EBG pattern.

Electromagnetic bandgap pattern structure, method of manufacturing the same, and security product using the same

The present invention relates to phthalocyanine compound of poly cross-linking type which is represented with the below formula 1 and is useful for preventing forgery and alternation due to a rapid velocity being responded to a gamma ray of Neutron, and an ink composition comprising it. 

Gamma ray-sensitive phthalocyanine compound of poly cross-linking type and ink composition comprising the same

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Daejeon, South Korea

Won Gyun Choe