Issued Patents All Time
Showing 1–2 of 2 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 4804393 | Methods for producing optical fiber preform and optical fiber | Koji Yano, Minoru Watanabe, Michihisa Kyoto | 1989-02-14 |
| 4693738 | Method for producing glass preform for optical fiber | Michihisa Kyoto, Koji Yano, Gotaro Tanaka | 1987-09-15 |