Issued Patents 1989
Showing 1–2 of 2 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 4888781 | Semiconductor laser | Etsuji Omura, Katsuhiko Goto, Shogo Takahashi, Harumi Namba | 1989-12-19 |
| 4849372 | Semiconductor laser device and a method of producing same | — | 1989-07-18 |