Issued Patents All Time
Showing 26–27 of 27 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 6310885 | Network system | Takahisa Sakai, Toshihisa Ikeda, Kenichi Moriguchi | 2001-10-30 |
| 6005869 | Communication network | Takahisa Sakai, Toshihisa Ikeda, Toshihiko Kurosaki, Toshio Oga | 1999-12-21 |