Issued Patents All Time
Showing 1–17 of 17 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 12025530 | Optical pulse tester | Akira Takikawa, Shoichi Aoki, Katsushi Ota | 2024-07-02 |
| 9255861 | Method of measuring optical loss and apparatus for measuring optical loss | Yousuke Harima | 2016-02-09 |
| 6700655 | Optical fiber characteristic measuring device | Yoshiyuki Sakairi | 2004-03-02 |
| 6366348 | Optical fiber distortion measuring apparatus and optical fiber distortion measuring method | Yasushi Sato, Toshio Kurashima | 2002-04-02 |
| 6335788 | Optical-fiber characteristics measuring apparatus | Toshio Kurashima | 2002-01-01 |
| 6055044 | Apparatus for measuring characteristics of optical fiber | Zhixien Lee | 2000-04-25 |
| 5949533 | Optical fiber distortion measurement device and method thereof | Zhixien Lee | 1999-09-07 |
| 5880824 | Optical fiber strain measuring apparatus | Zhixien Li, Yasushi Satoh, Toshio Kurashima | 1999-03-09 |
| 5880463 | Optical fiber strain-measuring apparatus | — | 1999-03-09 |
| 5821426 | Optical fiber strain measuring apparatus | — | 1998-10-13 |
| 5781322 | Method and apparatus for measuring the noise figure of an optical amplifier | Zhixien Li, Kazuo Aida | 1998-07-14 |
| 5777727 | OTDR measurement device | Yasushi Sato | 1998-07-07 |
| 5581389 | Light frequency control apparatus | Tekken Lee, Nobunari Takeuchi, Kaoru Shimizu, Tsuneo Horiguchi, Yahei Koyamada | 1996-12-03 |
| 5561551 | Method and apparatus for determining noise factor of optical amplifier | Takashi Iwasaki, Kazuo Aida, Yoshiaki Sato | 1996-10-01 |
| 5500762 | Light frequency control apparatus | Tekken Lee, Nobunari Takeuchi, Kaoru Shimizu, Tsuneo Horiguchi, Yahei Koyamada | 1996-03-19 |
| 5493110 | Light frequency synthesizer | Nobunari Takeuchi, Tekken Lee, Kaoru Shimizu, Tsuneo Horiguchi | 1996-02-20 |
| 5438578 | Light-frequency control apparatus | Tekken Lee, Nobunari Takeuchi, Kaoru Shimizu, Tsuneo Horiguchi | 1995-08-01 |