Issued Patents All Time
Showing 1–2 of 2 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 7634272 | Mobile station, mobile communication system, and cell selection method | Takeshi Yamashita, Hideo Matsuki, Hidetoshi Kayama, Narumi Umeda | 2009-12-15 |
| 7218950 | Base station, mobile station, communication system, transmission control method, and mobile station control program | Heng Qiu, Hidetoshi Kayama, Narumi Umeda | 2007-05-15 |