Issued Patents All Time
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 7872612 | Antenna apparatus utilizing aperture of transmission line | Kanji Otsuka, Tamotsu Usami, Yutaka Akiyama | 2011-01-18 |
| 7113002 | Transmission cable structure for GHz frequency band signals and connector used for transmission of GHz frequency band signals | Kanji Otsuka, Tamotsu Usami, Yutaka Akiyama, Osamu Koyasu | 2006-09-26 |
| 6763581 | Method for manufacturing spiral contactor | Yukihiro Hirai, Kouichi Yoshida | 2004-07-20 |
| 6517362 | Spiral contactor, semiconductor device inspecting apparatus and electronic part using same, and method of manufacturing the same | Yukihiro Hirai, Kouichi Yoshida | 2003-02-11 |