Issued Patents All Time
Showing 51–54 of 54 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 4337443 | Semiconductor laser device with facet passivation film | Jun-ichi Umeda, Toshikazu Shimada, Yoshifumi Katayama, Takashi Kajimura, Shigeo Yamashita | 1982-06-29 |
| 4326176 | Semiconductor laser device | Kunio Aiki, Jun-ichi Umeda | 1982-04-20 |
| 4288757 | Semiconductor laser device | Takashi Kajimura, Motohisa Hirao, Takao Kuroda, Shigeo Yamashita, Jun-ichi Umeda | 1981-09-08 |
| 4257011 | Semiconductor laser device | Shigeo Yamashita, Takao Kuroda, Jun-ichi Umeda | 1981-03-17 |