Issued Patents All Time
Showing 1–4 of 4 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 11820691 | Manufacturing apparatus and manufacturing method for optical fiber porous preform | Tatsuyuki Higashizawa, Masaki Nakajima | 2023-11-21 |
| 11565964 | Method of manufacturing porous glass preform for optical fiber | Masaki Nakajima | 2023-01-31 |
| 11001520 | Optical fiber glass preform manufacturing method | Akihiro Kanao | 2021-05-11 |
| 9902643 | Production method of optical fiber preform and production method of optical fiber | — | 2018-02-27 |