Issued Patents All Time
Showing 1–2 of 2 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 8425021 | Ink cartridge for printer | Kwang-Choon Chung, Chang-Soo Yu, Nam-Boo Cho, Young Chul Shin, In-Ha Kim +1 more | 2013-04-23 |
| 7997708 | Ink-cartridge for printers and ink refilling method | Kwang-Choon Chung, Chang-Soo Yu, Nam-Boo Cho, Young Chul Shin | 2011-08-16 |