Issued Patents 2004
Showing 1–3 of 3 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 6812325 | Polyamines and polymers made therewith | — | 2004-11-02 |
| 6723799 | Acid-dyeable polymer compositions | Yanhui Sun | 2004-04-20 |
| 6713653 | Polyamines and polymers made therewith | — | 2004-03-30 |