Issued Patents 2003
Showing 1–3 of 3 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 6658216 | Voltage controlled oscillator, FM signal optical transmitter, FM signal optical receiver and FM signal optical transmission system | Hisashi Adachi, Hiroyuki Asakura | 2003-12-02 |
| 6643470 | FM signal converter, FM signal optical transmitter and FM signal optical receiver | Hisashi Adachi, Hiroyuki Asakura | 2003-11-04 |
| 6597480 | Wavelength tunable filter apparatus | Hiroyuki Asakura | 2003-07-22 |