Issued Patents All Time
Showing 1–2 of 2 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 6477383 | Communication system having a notification function with respect to a predetermined state of each communication terminal thereof | Shinjiro Ishida | 2002-11-05 |
| 6192251 | Communication system having a notification function with respect to a predetermined state of each communication terminal thereof | Shinjiro Ishida | 2001-02-20 |