Issued Patents 2004
Showing 1–2 of 2 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 6827883 | Optical fiber preform and the method of producing the same | Yasuhiro Naka, Nobuaki Orita | 2004-12-07 |
| 6823125 | Optical fiber base material, its manufacturing method and optical fiber | Kazuto Hirabayashi | 2004-11-23 |