Issued Patents All Time
Showing 1–11 of 11 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 10468745 | Security paper based on RF tag using dipole array structure and method for manufacturing the security paper | Dong Ho Jeon, Min Sik Kim, Seung Jin Ryu, Dae Heon LEE | 2019-11-05 |
| 10152662 | Apparatus and method for generating 2D barcode and apparatus for extracting 2D barcode information | Seung Jin Ryu, Min Sik Kim, Dong Ho Jeon | 2018-12-11 |
| 9998495 | Apparatus and method for verifying detection rule | Sung Ho Kim, Sung Il Lee, Su-Chul LEE, Do Hoon Lee | 2018-06-12 |
| 9892350 | Image-forming apparatus having internal security paper detection unit and image-forming method thereof | Min Sik Kim, Seung Jin Ryu, Do Hoon Lee, Nak Jun JEONG, Min Ho Noh | 2018-02-13 |
| 9721198 | Image-forming apparatus having external security paper detection unit and image-forming method thereof | Min Sik Kim, Seung Jin Ryu, Do Hoon Lee, Nak Jun JEONG, Min Ho Noh | 2017-08-01 |
| 9710872 | Information insertion method, information extraction method, and information extraction apparatus using dot-based information robust to geometric distortion | Seung Jin Ryu, Min Sik Kim, Do Hoon Lee | 2017-07-18 |
| 9560032 | Method and apparatus for preventing illegitimate outflow of electronic document | Min Sik Kim, Seung Jin Ryu, Ki Heon Kim, Do Hoon Lee | 2017-01-31 |
| 9368010 | Security printing paper based on chipless radio frequency tag and method of manufacturing the same | Min Sik Kim, Seung Jin Ryu, Do Hoon Lee | 2016-06-14 |
| 9292238 | Method and apparatus for preventing leakage of printout using security paper | Seung Jin Ryu, Min Sik Kim, Do Hoon Lee | 2016-03-22 |
| 9193173 | Method and apparatus for preventing illegitimate exit of printed document by applying security material | Seung Jin Ryu, Min Sik Kim, Do Hoon Lee | 2015-11-24 |
| 8208475 | Packet scheduler and packet scheduling method | Ji-Soo Park, Dong Jin Shin, Cheol-Hye Cho, Moon-Soo Jang, Chang Ki Kim +1 more | 2012-06-26 |