Issued Patents 1989
Showing 1–3 of 3 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 4888781 | Semiconductor laser | Katsuhiko Goto, Shogo Takahashi, Harumi Namba, Akira Takemoto | 1989-12-19 |
| 4847217 | Method for making a semiconductor device | Katsuhiko Goto | 1989-07-11 |
| 4847845 | Semiconductor laser with an interposed gap | Hirofumi Namizaki | 1989-07-11 |