Issued Patents All Time
Showing 26–28 of 28 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 5506920 | Optical wavelength tunable filter | Naoya Henmi, Akio Tajima, Haruo Takahashi, Hiroyuki Morimura | 1996-04-09 |
| 5400167 | Optical frequency acquisition apparatus for optical coherent communication system | — | 1995-03-21 |
| 5325382 | Method and electrode arrangement for inducing flat frequency modulation response in semiconductor laser | Katsumi Emura, Ikuo Mito | 1994-06-28 |