Issued Patents All Time
Showing 51–59 of 59 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 5401957 | Optical waveform shaping device for peforming waveform equalization and timing synchronization | Masatoshi Suzuki, Hideaki Tanaka, Shu Yamamoto, Yuichi Matsushima | 1995-03-28 |
| 5260816 | Optical amplifier with erbium-doped fiber | Yoshihiro Yoshida, Minoru Taya, Kazuo Koya | 1993-11-09 |
| 5246475 | Method for preparing a fused silica glass body co-doped with a rare earth element and aluminum | Yoshihiro Yoshida, Minoru Taya, Tadakatsi Shimada, Kazuo Koya | 1993-09-21 |
| 5162936 | Apparatus for monitoring the operation of an optical repeater | Hidenori Taga, Shu Yamamoto, Hiroharu Wakabayashi | 1992-11-10 |
| 5140452 | Long-distance high-speed optical communication scheme | Shu Yamamoto, Hidenori Taga, Yoshihiro Yoshida, Shiro Ryu, Hiroharu Wakabayashi | 1992-08-18 |
| 5042039 | Er-doped optical fiber laser device | Kiyofumi Mochizuki, Hiroharu Wakabayashi | 1991-08-20 |
| 4972513 | Multi-point optical amplification repeating system | Kiyofumi Mochizuki, Yoshinao Iwamoto | 1990-11-20 |
| 4923291 | Optical amplification | Kiyofumi Mochizuki, Yoshinao Iwamoto | 1990-05-08 |
| 4899043 | Fault monitoring system for optical fiber communication systems | Kiyofumi Mochizuki, Yoshinao Iwamoto | 1990-02-06 |