Issued Patents All Time
Showing 1–12 of 12 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 11936422 | Spectrum monitoring apparatus, submarine apparatus, and optical communication system | — | 2024-03-19 |
| 11405110 | Optical repeater and optical signal relay method | — | 2022-08-02 |
| 10349153 | Optical multiplexing and demultiplexing device, and method of controlling optical multiplexing and demultiplexing device | — | 2019-07-09 |
| 10200117 | Optical communication device, optical communication system, and optical communication method | — | 2019-02-05 |
| 9496676 | Optical amplifier and control method thereof | — | 2016-11-15 |
| 9444219 | Repeater, excitation light supply device used for the same, and excitation light supply method | — | 2016-09-13 |
| 6967980 | Optical semiconductor module | — | 2005-11-22 |
| 6597484 | Two-way combination optical system unit | — | 2003-07-22 |
| 6453091 | Optical system unit for optical transceiver | — | 2002-09-17 |
| 6184560 | Photosemiconductor device mounted structure | — | 2001-02-06 |
| 5319271 | Pulse signal generating device | Hideki Shimada, Yoshifumi Shimogaki | 1994-06-07 |
| 5252876 | Frequency generator and a D.C. motor equipped with same | Yoshifumi Shimogaki, Hideki Shimada | 1993-10-12 |