Issued Patents All Time
Showing 1–2 of 2 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 6972662 | RFID (radio frequency identification) and IC card | Takehiro Ohkawa, Hiroshi Yoshigi, Tadashi Oonishi, Kazuki Watanabe | 2005-12-06 |
| 6157316 | Selective call receiver with rechargeable battery | Kouichiro Okayama | 2000-12-05 |