Issued Patents 1997
Showing 1–2 of 2 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 5637130 | Method and furnace for drawing optical fibers | Katsuya Nagayama, Kohei Kobayashi, Ichiro Tsuchiya | 1997-06-10 |
| 5624474 | Optical fiber preform manufacturing apparatus which measures a vertical load with three cells | Ichiro Tsuchiya, Toshio Danzuka | 1997-04-29 |