Issued Patents 1997
Showing 1–4 of 4 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 5642401 | System and method of authenticating a service request in a mobile communication system | — | 1997-06-24 |
| 5640391 | Relocation control of substrate channels | Toshio Nitta | 1997-06-17 |
| 5619551 | Cellular telephone exchange system which allows setting of connections between the base station transmitter-receivers and base station controllers base on movement of the mobile station | — | 1997-04-08 |
| 5613199 | Mobile communication system and a mobile station paging method | — | 1997-03-18 |