Issued Patents 2017
Showing 1–2 of 2 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 9783450 | Method of producing glass preform and optical fiber | Keiichi Aiso, Naomi Kumano | 2017-10-10 |
| 9695079 | Production method of optical fiber preform, and production method of optical fiber | Tomohiro Gonda, Katsunori Imamura, Ryuichi Sugizaki | 2017-07-04 |