Issued Patents All Time
Showing 1–3 of 3 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 6955311 | Self-propelled recycling machine, and base unit and base frame of self-propelled recycling machine | Takanao Hasebe, Masamichi Tanaka, Kazuhide Seki | 2005-10-18 |
| 6480289 | Position measuring apparatus and optical deflection angle measuring apparatus for underground excavators | Yoshiaki Shimomura, Naoki Miyanagi | 2002-11-12 |
| 4939431 | Control system for synchronous rotation of cutter heads, for use in shield machine | Hidetsugu Yamazaki, Ryuzaburo Otsuka, Toshihumi Yuzawa, Seiji Tadano, Kiyoshi Tsuchiya | 1990-07-03 |