Issued Patents All Time
Showing 1–16 of 16 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 12375178 | Control device, compensation device, program, and control method | — | 2025-07-29 |
| 12341555 | Detection device, optical reception device, optical communication system, program, and detection method | — | 2025-06-24 |
| 6493074 | Method and apparatus for measuring an optical transfer characteristic | Motoki Imamura | 2002-12-10 |
| 6201599 | Optical transmission line monitoring apparatus | Yukio Horiuchi | 2001-03-13 |
| 6185020 | Apparatus for detecting a fault location in an optical fiber line | Yukio Horiuchi | 2001-02-06 |
| 5940197 | Optical add-drop device | — | 1999-08-17 |
| 5912756 | Light receiving device | — | 1999-06-15 |
| 5898719 | Optical frequency stabilizer | — | 1999-04-27 |
| 5793512 | Optical communication system | — | 1998-08-11 |
| 5463461 | Coherent optical receiver having optically amplified local oscillator signal | Yukio Horiuchi | 1995-10-31 |
| 5387992 | Optical frequency multiplex carrier control system | Tetsuya Miyazaki | 1995-02-07 |
| 5317382 | Optical phase detection method with orthogonal polarization and phase compensation arrangement | Tetsuya Miyazaki | 1994-05-31 |
| 5140452 | Long-distance high-speed optical communication scheme | Shu Yamamoto, Hidenori Taga, Noboru Edagawa, Yoshihiro Yoshida, Hiroharu Wakabayashi | 1992-08-18 |
| 4984884 | Method for measuring dispersion characteristics of an optical fiber | Kiyohumi Mochizuki, Yukio Horiuchi | 1991-01-15 |
| 4977564 | Controller for semiconductor laser light source | Kiyohumi Mochizuki | 1990-12-11 |
| 4888817 | Polarization diversity light receiving system using baseband combining | Kiyofumi Mochizuki | 1989-12-19 |