Issued Patents All Time
Showing 1–1 of 1 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 5990216 | Method for manufacturing grafted polyacrylamide flocculant of cationic/ampholytic ions | Huihua Yan, Yingxiang Tao | 1999-11-23 |
Showing 1–1 of 1 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 5990216 | Method for manufacturing grafted polyacrylamide flocculant of cationic/ampholytic ions | Huihua Yan, Yingxiang Tao | 1999-11-23 |