Kona I Co., Ltd.

Hass Corp.

Ji Yeong Kim

Woo Jin Choi

Sung Hwan Choi

Jae Sung Kwon

Jin Kee Hong

Su Young Ki

Dae Beom Sim

Ji Young Seo

The present specification provides a dental glass ionomer cement (GIC) composition comprising a zwitterionic material and a glass ionomer cement, and a method of preparing the same.

Glass ionomer cement compostion for dental purposes and method for preparing the same

Provided is a multi-card having a fingerprint input unit and a payment method using the same, and the multi-card includes a secure element adapted to allow multiple pieces of card information issued to the same card service to match each of a plurality of fingerprints to thus store the matching results therein and a fingerprint input unit for receiving the plurality of fingerprints inputted thereto, wherein the secure element produces transaction response information having one piece of card information activated according to the fingerprint information inputted to the fingerprint input unit.

Multi-card including fingerprint input unit and payment method using the same

Growing community of inventors

Seoul, South Korea

Ji Yeong Kim