Issued Patents 1997
Showing 1–5 of 5 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 5693115 | Process for production of glass preform for optical fiber including consolidating in a furnace with a temperature gradient | Masumi Ito, Yuichi Ohga, Sumio Hoshino, Ichiro Tsuchiya | 1997-12-02 |
| 5685889 | Method for flame abrasion of glass preform | Yuichi Ohga | 1997-11-11 |
| 5676725 | Method of manufacturing single-mode optical fiber | Masumi Ito, Sumio Hoshino | 1997-10-14 |
| 5674306 | Method and apparatus for drawing glass preform for optical fiber | Sumio Hoshino, Yuichi Ohga, Katsuzo Mukai | 1997-10-07 |
| 5624474 | Optical fiber preform manufacturing apparatus which measures a vertical load with three cells | Ichiro Tsuchiya, Hiroaki Ohta | 1997-04-29 |