Issued Patents All Time
Showing 1–4 of 4 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 6314229 | End seal structure for cable closure | Daijiro Sasaki, Tadashi Hattori | 2001-11-06 |
| 6305754 | Tunnel excavator with S-shaped soil plate | Takanobu Miki, Tomofumi Ishino | 2001-10-23 |
| 6206478 | Tunnel excavator with crawler drive and roof support bearing frames | Takanobu Miki, Tomofumi Ishino | 2001-03-27 |
| 5051032 | Method and apparatus for continuously excavating shaft and tunnel | Toshihiko Bessho, Toshimi Ino, Kenichi Kaneko, Hiroyuki Ito | 1991-09-24 |