Issued Patents 2011
Showing 1–3 of 3 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 7946132 | Method for manufacturing optical fiber preform and optical fiber preform apparatus | Shunichirou Hirafune | 2011-05-24 |
| 7921676 | Method for manufacturing optical fiber preform and optical fiber preform apparatus | Shunichirou Hirafune | 2011-04-12 |
| 7866189 | Dehydration-sintering furnace, a manufacturing method of an optical fiber preform utilizing the furnace and an optical fiber preform manufactured by the method | Naritoshi Yamada | 2011-01-11 |