Issued Patents 2018
Showing 1–3 of 3 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 9940007 | Shortening multimedia content | Chang Lei, Cheng Zhang, Jian Zhang, Chao Zheng | 2018-04-10 |
| 9903005 | Method and device for depleting copper smelting slag | Songlin Zhou, Weidong Liu | 2018-02-27 |
| 9867878 | Method and device for producing crude copper | Songlin Zhou, Weidong Liu | 2018-01-16 |