Issued Patents All Time
Showing 1–2 of 2 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 4847846 | Semiconductor laser chip | Haruo Sone, Isao Umezawa | 1989-07-11 |
| 4608695 | Laser device formed with a stripe light emission region | Tatsuji Oda, Takayoshi Mamine | 1986-08-26 |