Issued Patents 2002
Showing 1–2 of 2 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 6411429 | Optical amplifying apparatus, wide-band optical amplifying apparatus, and optical communication system | Hiroaki Tomofuji, Motoyoshi Sekiya, Takeshi Sakamoto, Makoto Murakami, Chihiro Ohshima | 2002-06-25 |
| 6373624 | Optical amplifier and an optical amplification method | Hideaki Sugiya | 2002-04-16 |