Issued Patents All Time
Showing 1–2 of 2 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 5382448 | Method of manufacturing optical transmission medium from synthetic resin | Yasuhiro Koike | 1995-01-17 |
| 5253323 | Method of manufacturing a graded optical transmission medium made of synthetic resin | Yasuhiro Koike | 1993-10-12 |