Issued Patents All Time
Showing 1–3 of 3 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 6221432 | Eradicable inks | Yichun Wang | 2001-04-24 |
| 6149721 | Solvent-based pen inks | Yichun Wang | 2000-11-21 |
| 5916357 | Eradicable inks | Yichun Wang | 1999-06-29 |
Showing 1–3 of 3 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 6221432 | Eradicable inks | Yichun Wang | 2001-04-24 |
| 6149721 | Solvent-based pen inks | Yichun Wang | 2000-11-21 |
| 5916357 | Eradicable inks | Yichun Wang | 1999-06-29 |