Issued Patents 1989
Showing 1–2 of 2 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 4805006 | Light receiving element | Yukio Idaka, Takeshi Matsumoto, Tatsuhiko Irie | 1989-02-14 |
| 4801822 | Semiconductor switching circuit | Yukio Idaka, Takeshi Matsumoto | 1989-01-31 |
Showing 1–2 of 2 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 4805006 | Light receiving element | Yukio Idaka, Takeshi Matsumoto, Tatsuhiko Irie | 1989-02-14 |
| 4801822 | Semiconductor switching circuit | Yukio Idaka, Takeshi Matsumoto | 1989-01-31 |