Issued Patents All Time
Showing 1–2 of 2 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 4500441 | Contact lens cleaning and storage composition | Kyoichi Tanaka, Akira Tsuzuki | 1985-02-19 |
| 4440662 | Cleaning composition for contact lenses | Akira Tsuzuki, Takeo Kibe | 1984-04-03 |