Issued Patents All Time
Showing 1–3 of 3 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 7113702 | Wavelength division multiplexing optical transmission system and transmission method | Eiichi Yamada, Hiroaki Sanjoh | 2006-09-26 |
| 5025448 | Method and apparatus for stabilizing frequency of semiconductor laser | Shoichi Sudo, Yoshihisa Sakai, Hiroshi Yasaka, Tetsuhiko Ikegami, Itaru Yokohama +1 more | 1991-06-18 |
| 4856005 | Wavelength conversion element for a semiconductor laser | Kunishige Oe, Hitoshi Kawaguchi | 1989-08-08 |