Issued Patents 1997
Showing 1–2 of 2 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 5671254 | Modulation, demodulation and antenna coupling circuits used in IC card reading/writing apparatus, and method of supplying power to the IC card | Yoshishige Nagata | 1997-09-23 |
| 5664157 | Noncontact IC card interface unit and communication system using the interface unit | Koichi Hayamizu | 1997-09-02 |