Issued Patents All Time
Showing 1–1 of 1 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 5849061 | Process for refining high-impurity copper to anode copper | Baozhong Zhao | 1998-12-15 |
Showing 1–1 of 1 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 5849061 | Process for refining high-impurity copper to anode copper | Baozhong Zhao | 1998-12-15 |