Issued Patents All Time
Showing 1–2 of 2 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 7042400 | Multi-frequency antenna | Tadashi Oshiyama | 2006-05-09 |
| 6522300 | Antenna device for mobile tele-communication terminal | Tadashi Oshiyama, Atsushi Sato, Takao Kawahara, Seiji Gou | 2003-02-18 |