Issued Patents 1997
Showing 1–2 of 2 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 5689244 | Communication system and electronic apparatus | Yuko Iijima, Hisato Shima, Makoto Sato | 1997-11-18 |
| 5621725 | Communication system capable of preventing dropout of data block | Hisato Shima, Keiko Tamamizu | 1997-04-15 |