Issued Patents 1989
Showing 1–3 of 3 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 4885750 | Method and apparatus for error correction | Koji Tanaka, Kazunori Nishikawa | 1989-12-05 |
| 4868827 | Digital data processing system | Kazunori Nishikawa, Koji Tanaka, Yasuhiro Yamada | 1989-09-19 |
| 4811370 | Digital muting circuit | Kazunori Nishikawa, Koji Tanaka | 1989-03-07 |