Issued Patents 1989
Showing 1–2 of 2 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 4843224 | IC card | Satoshi Ohta | 1989-06-27 |
| 4812634 | IC card with a solar battery | Satoshi Ohta, Hideo Yamamoto, Keiji Kumagai | 1989-03-14 |
Showing 1–2 of 2 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 4843224 | IC card | Satoshi Ohta | 1989-06-27 |
| 4812634 | IC card with a solar battery | Satoshi Ohta, Hideo Yamamoto, Keiji Kumagai | 1989-03-14 |