Issued Patents All Time
Showing 1–3 of 3 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 8401173 | Telephone-line-connection method | Takashi Kaneko, Masaaki Nagasaka, Tadaaki Tanaka, Keita Kobayashi, Norishige Ichihashi | 2013-03-19 |
| 7874002 | Method of connection of equipment in a network and network system using same | Takashi Kaneko, Tadaaki Tanaka, Hiroki Takayama | 2011-01-18 |
| 5991623 | Method and system for preventing unjust use of personal communication terminal | Koji Shirota | 1999-11-23 |