Issued Patents 2003
Showing 1–2 of 2 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 6668592 | Optical fiber drawing furnace having adjustable partitions | Katsuya Nagayama, Kazuya Kuwahara, Ichiro Tsuchiya | 2003-12-30 |
| 6543256 | Optical fiber coupler making apparatus made from zirconia and method | Ichiro Tsuchiya | 2003-04-08 |