Issued Patents 2004
Showing 1–3 of 3 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 6806836 | Helical antenna apparatus provided with two helical antenna elements, and radio communication apparatus provided with same helical antenna apparatus | Koichi Ogawa, Hiroshi Iwai | 2004-10-19 |
| 6731920 | Portable telephone apparatus and control method thereof | Hiroshi Iwai, Koichi Ogawa, Kenichi Yamada | 2004-05-04 |
| 6697025 | Antenna apparatus | Hisashi Morishita, Jun Ito | 2004-02-24 |