Issued Patents 1997
Showing 1–3 of 3 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, Toshio Danzuka, Yuichi Ohga, Ichiro Tsuchiya | 1997-12-02 |
| 5676725 | Method of manufacturing single-mode optical fiber | Masumi Ito, Toshio Danzuka | 1997-10-14 |
| 5674306 | Method and apparatus for drawing glass preform for optical fiber | Toshio Danzuka, Yuichi Ohga, Katsuzo Mukai | 1997-10-07 |