Issued Patents 1989
Showing 1–1 of 1 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 4851146 | Phosphonic acid derivative based agents for cleaning and dissolving tartar of removable oral prostheses | Kazuhiro Watanabe | 1989-07-25 |
Showing 1–1 of 1 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 4851146 | Phosphonic acid derivative based agents for cleaning and dissolving tartar of removable oral prostheses | Kazuhiro Watanabe | 1989-07-25 |