Issued Patents 1989
Showing 1–2 of 2 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 4879742 | Charging system in data communication network | Hidenobu Taniguchi | 1989-11-07 |
| 4875208 | Transmission method for control information in communication network | Koshi Furuhashi, Satoshi Miyazaki, Masakazu Furuya, Sinichi Kouyama, Jiro Kashio | 1989-10-17 |