Issued Patents All Time
Showing 1–6 of 6 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 5933227 | Testing method for optical fiber | — | 1999-08-03 |
| 5870184 | Optical pulse tester | — | 1999-02-09 |
| 5596449 | Light pulse generator | Ryouji Handa, Nobuo Tomita, Yoshitaka Enomoto | 1997-01-21 |
| 5557401 | Optical masking apparatus | Mikio Maeda | 1996-09-17 |
| 5408310 | Optical time domain reflectometer having shortened dead zone | Ryoji Handa | 1995-04-18 |
| 5233619 | High power light pulse generator | Ryoji Handa | 1993-08-03 |