Issued Patents All Time
Showing 1–2 of 2 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 6193390 | Circular fluorescent lamp unit and lighting apparatus. | Yuichi Sakakibara, Toshiharu Yagi, Ichiro Yamada | 2001-02-27 |
| 5796210 | Circular fluorescent lamp unit and lighting apparatus | Yuichi Sakakibara, Toshiharu Yagi, Ichiro Yamada | 1998-08-18 |