Issued Patents All Time
Showing 1–3 of 3 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 6980554 | Method and apparatus for connecting lines in line concentrator of switching system | Shunichi Shibata, Fumikiyo Kikukawa, Kenji Maeda, Ryoji Matsuno, Tsuyoshi Takehiro +3 more | 2005-12-27 |
| 6567516 | Method and device for controlling affiliation of remote line-collection device with switch | Akihiro Horiuchi, Hiromitsu Kajiyama, Shunichi Shibata, Kenji Maeda | 2003-05-20 |
| 6327353 | Apparatus and method for permitting temporary use of a telephone number | Yohji Fukuzawa, Toshihiro Morikawa | 2001-12-04 |