Issued Patents All Time
Showing 1–1 of 1 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 8133642 | Metal optical grayscale mask and manufacturing method thereof | Chuanfei Guo, Qian Liu, Yongsheng Wang | 2012-03-13 |
Showing 1–1 of 1 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 8133642 | Metal optical grayscale mask and manufacturing method thereof | Chuanfei Guo, Qian Liu, Yongsheng Wang | 2012-03-13 |