Issued Patents All Time
Showing 1–10 of 10 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 8494361 | Apparatus for monitoring optical signal quality specifically applicable to NRZ optical signals | — | 2013-07-23 |
| 8208819 | Optical signal generator | Hitoshi Murai | 2012-06-26 |
| 8165473 | Optical-time-division-multiplexing differential phase shift keying signal generating apparatus | — | 2012-04-24 |
| 8121475 | Optical signal quality monitor for a high-bit rate signal | — | 2012-02-21 |
| 7974542 | OTDM-DPSK signal generator capable of detecting an optical carrier phase difference between optical pulses | — | 2011-07-05 |
| 7957646 | Optical time division multiplexing transmitter | — | 2011-06-07 |
| 7903976 | Optical element integrated module | Hiromi Tsuji, Kozo Fujii | 2011-03-08 |
| 7877010 | Device for monitoring the quality of an optical signal by filtering its beat component | — | 2011-01-25 |
| 7783203 | System and method for controlling a difference in optical phase and an optical signal transmitter | — | 2010-08-24 |
| 7630640 | Bidirectional time division multiplexing optical communication system | Hiromi Tsuji | 2009-12-08 |