Issued Patents 1989
Showing 1–4 of 4 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 4875211 | Galois field arithmetic logic unit | Katsumi Murai | 1989-10-17 |
| 4873679 | Optical information recording disk and optical information recording disk apparatus | Katsumi Murai | 1989-10-10 |
| 4866717 | Code error detecting and correcting apparatus | Katsumi Murai, Isao Satoh | 1989-09-12 |
| 4821253 | Optical disk and optical disk apparatus with error correction | Katsumi Murai, Isao Satoh | 1989-04-11 |