Issued Patents 2022
Showing 1–2 of 2 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 11448821 | Slant-type fiber grating | Shigehiro Nagano, Jun Kinugasa, Takemi Hasegawa | 2022-09-20 |
| 11378737 | Optical fiber preform, method for manufacturing optical fiber preform, and method for setting striae pitch of optical fiber preform | Masatoshi Hayakawa | 2022-07-05 |