Issued Patents All Time
Showing 1–7 of 7 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 5432629 | Light transmission device capable of stably transmitting a modulated output light beam | Arihide Noda | 1995-07-11 |
| 5301053 | Method for transmission and receipt of coherent light signals | — | 1994-04-05 |
| 4807227 | Optical wavelength-division switching system with coherent optical detection system | Masahiko Fujiwara, Kazuhisa Kaede | 1989-02-21 |
| 4759080 | Coherent optical communication system with FSK heterodyne or homodyne detection and little influence by distortion of a modulated optical signal | Katsumi Emura | 1988-07-19 |
| 4706300 | Optical heterodyne detection pulse receiving system and method | Kouichi Minemura, Katsumi Emura | 1987-11-10 |
| 4704741 | Bidirectional optical communication system | — | 1987-11-03 |
| 4700352 | FSK laser transmitting apparatus | Shuntaro Yamazaki, Sadao Fujita | 1987-10-13 |