Issued Patents 2011
Showing 1–3 of 3 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 8073426 | Authentication vector generation device, subscriber identity module, wireless communication system, authentication vector generation method, calculation method, and subscriber authentication method | — | 2011-12-06 |
| 7974603 | Authentication vector generating device, subscriber authentication module, mobile communication system, and authentication vector generation method | Teruaki Shiro, Hiroshi Umeno | 2011-07-05 |
| 7937082 | Mobile communication terminal, IC card, mobile communication system, program, and communication charge notification method | Takeshi Ohno, Hiroshi Umeno | 2011-05-03 |