Issued Patents All Time
Showing 1–12 of 12 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 12291481 | Method for manufacturing optical fiber | Iwao Okazaki, Yuuki Shibuya | 2025-05-06 |
| 11366267 | Optical fiber | Yoshinori Yamamoto, Takemi Hasegawa, Yuki Kawaguchi | 2022-06-21 |
| 11181684 | Optical fiber | Yoshiaki Tamura, Hirotaka Sakuma | 2021-11-23 |
| 11048040 | Optical fiber | Hirotaka Sakuma, Yoshiaki Tamura, Yuki Kawaguchi | 2021-06-29 |
| 11022749 | Optical fiber | Hiroki Ishikawa, Sotaro IDA | 2021-06-01 |
| 10908354 | Optical fiber | Hiroki Ishikawa, Sotaro IDA | 2021-02-02 |
| 10723650 | Optical fiber preform | Yoshiaki Tamura, Hirotaka Sakuma | 2020-07-28 |
| 10656329 | Optical fiber | Hirotaka Sakuma, Yoshiaki Tamura, Yuki Kawaguchi | 2020-05-19 |
| 10550030 | Optical fiber | Hirotaka Sakuma, Yoshiaki Tamura | 2020-02-04 |
| 10048437 | Optical fiber and colored optical fiber | Yoshinori Yamamoto | 2018-08-14 |
| 10031282 | Optical fiber | Hirotaka Sakuma, Yoshiaki Tamura | 2018-07-24 |
| 8011209 | Method of making glass | Sumio Hoshino | 2011-09-06 |