Issued Patents 2002
Showing 1–2 of 2 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 6501593 | Raman amplifier, optical repeater, and raman amplification method | Youichi Akasaka, Shu Namiki | 2002-12-31 |
| 6411430 | Optical amplifier | Atsushi Ogino, Masaru Fukushima, Haruki Ogoshi, Yoshio Tashiro | 2002-06-25 |