Issued Patents 1997
Showing 1–2 of 2 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 5700875 | Adhesive composition for dental treatment | Weiping Zeng, Takashi Yamamoto, Masami Arata | 1997-12-23 |
| 5670559 | Primer solution composition for dental bonding | Weiping Zeng, Masami Arata | 1997-09-23 |