Issued Patents All Time
Showing 1–6 of 6 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 10897372 | Communication device, communication system, communication method and program | Takahiro Furuya | 2021-01-19 |
| 10820031 | Communication apparatus for switching between a low-rate stream and a high-rate stream | Takahiro Furuya, Kazumi Munekata | 2020-10-27 |
| 8817578 | Sonic wave output device, voice communication device, sonic wave output method and program | Seiichi Izumi | 2014-08-26 |
| 8456362 | Receiving apparatus, radio communication system, position estimation method and program | Seiichi Izumi, Hiroaki Takano, Masanori Sato | 2013-06-04 |
| 8159395 | Communication device, communication system, position detection method and program | Seiichi Izumi | 2012-04-17 |
| 7372897 | Portable information communication terminal, program, and recording medium | — | 2008-05-13 |