Issued Patents All Time
Showing 1–14 of 14 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 8818388 | Communication device, communication system, and restricting method | Shinpei Kawakatsu | 2014-08-26 |
| 8792416 | Mobile communication system, mobile communication method, distribution server, radio network controller and mobile station | Ryo Kitahara | 2014-07-29 |
| 8626159 | Mobile device and location registration method | Gou Okuizumi, Hideo Mochida, Akimichi Tanabe, Masashi Kanauchi, Taketoshi Nakajima | 2014-01-07 |
| 8494536 | Communication device, communication system and restricting method | Shinpei Kawakatsu | 2013-07-23 |
| 8422423 | Packet communication method and mobile station | Masashi Kanauchi, Kota Fujimura, Shinpei Kawakatsu | 2013-04-16 |
| 8254873 | Mobile communication system, mobile communication method, radio network controller, radio base station and mobile station | Ryo Kitahara, Minami Ishii, Kota Fujimura | 2012-08-28 |
| 8150366 | Mobile terminal and mobile communication system | Tsuyoshi Takakura | 2012-04-03 |
| 8140082 | Communication system, mobile station, switch apparatus, and communication method | Takuhisa Tahara, Akimichi Tanabe, Shinpei Kawakatsu | 2012-03-20 |
| 8024776 | Relay device, authentication server, and authentication method | — | 2011-09-20 |
| 7925262 | System and associated method of maintaining packet switching capability in a cellular network | Kazuyuki Kozu, Kota Fujimura, Takashi Suzuki | 2011-04-12 |
| 7748028 | Authentication method, terminal device, relay device and authentication server | Atsushi Sato, Hiroshi Aono, Katsunobu Ohtsuki | 2010-06-29 |
| 7631345 | Relay device, authentication server, and authentication method | — | 2009-12-08 |
| 7373147 | Mobile communication method and mobile station | Kazuyuki Kozu, Kota Fujimura, Takashi Suzuki | 2008-05-13 |
| 7224971 | Mobile communication method and radio network controller | Kazuyuki Kozu, Kota Fujimura, Takashi Suzuki | 2007-05-29 |