Issued Patents All Time
Showing 1–3 of 3 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 10836671 | Method for manufacturing glass ingot | — | 2020-11-17 |
| 10246366 | Method of manufacturing optical fiber base material and method of manufacturing optical fiber | Kentaro Ichii, Tomofumi Arai | 2019-04-02 |
| 10167543 | Method for manufacturing optical fiber preform | — | 2019-01-01 |