Issued Patents 2017
Showing 1–4 of 4 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 9782861 | Metal sheet holding device for manufacturing pattern mask | Choong-Ho Lee, Sung Sik Yun, Doh-Hyoung Lee | 2017-10-10 |
| 9656291 | Method of manufacturing a metal mask | Choong-Ho Lee, Doh-Hyoung Lee, Sung Sik Yun, Da-Hee Jeong, Jun Ho Jo | 2017-05-23 |
| 9643280 | Laser processing apparatus | Doh-Hyoung Lee, Choong-Ho Lee, Sung Sik Yun, Arnold Gillner, Nelli Hambach +4 more | 2017-05-09 |
| 9592570 | Laser processing apparatus | Doh-Hyoung Lee, Choong-Ho Lee, Sung Sik Yun, Arnold Gillner, Nelli Hambach +4 more | 2017-03-14 |