Issued Patents 1989
Showing 1–3 of 3 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 4886366 | Reference corrected color sensor | — | 1989-12-12 |
| 4828815 | Production process of chlorine | Tadamitsu Kiyoura, Masanobu Ajioka, Naoshi Fujimoto, Toshihide Suzuki, Tokio Nagayama +1 more | 1989-05-09 |
| 4822589 | Manufacturing process of chlorine | Tadamitsu Kiyoura, Tokio Nagayama, Kazuo Kanaya | 1989-04-18 |