Issued Patents All Time
Showing 1–7 of 7 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 12056779 | Reception system, reception method, and program | Teruoki Matsumoto, Hiroshi Sakamoto, Naorni Kakinaga | 2024-08-06 |
| 6931000 | Internal line control system | — | 2005-08-16 |
| 6571108 | Private branch mobile communication system and method | Minako Takai | 2003-05-27 |
| 6370393 | Private branch exchange | Minako Takai | 2002-04-09 |
| 6330448 | Handover arrangement for mobile station moving across the boundary of wireless cell-site stations of adjacent PBXs | Yoshio Itagaki | 2001-12-11 |
| 5670950 | Private communications network system and method of authentication for a mobile station used in private communications networks | — | 1997-09-23 |
| 5515034 | Simple communication system capable of message broadcasting | Hiroyuki Watanabe | 1996-05-07 |