Issued Patents All Time
Showing 1–3 of 3 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 5539558 | System of detecting troubles of an optical communication line | Ryugen Yonemura, Nobuyuki Kobayashi, Hayato Yuuki | 1996-07-23 |
| 5233676 | Optical module | Ryugen Yonemura, Kouji Kishimoto | 1993-08-03 |
| 5224186 | Optical fiber connector with housing assembly for an assuring complete connection | Koji Kishimoto, Ryugen Yonemura | 1993-06-29 |