Issued Patents 1989
Showing 1–2 of 2 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 4818853 | Data card with inductive signal transfer device | Toshihiko Ohta, Kazuyoshi Fuse, Kunio Ohmi, Toshiaki Sato | 1989-04-04 |
| 4803350 | Non-contact reading type IC card with pre-enhancement function | Fumio Izawa | 1989-02-07 |