Issued Patents All Time
Showing 1–3 of 3 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 7023388 | Multiple resonance antenna and mobile phone antenna | — | 2006-04-04 |
| 6839033 | Multi-frequency antenna | Mitsuya Makino | 2005-01-04 |
| 6346926 | Helical antenna | Yutaka Izumi, Takashi Nakaya | 2002-02-12 |