Issued Patents All Time
Showing 1–3 of 3 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 7573991 | Communication control system and communication control method | Takanobu Kunugi | 2009-08-11 |
| 6963636 | Valuable cipher information issuing system and issuing method, telephone charge settlement system and telephone charge settlement method, and charge settlement system and charge settlement method | Takanobu Kunugi | 2005-11-08 |
| 6829339 | Communication control system and communication control method | Takanobu Kunugi | 2004-12-07 |