Issued Patents All Time
Showing 1–2 of 2 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 9617853 | Auxiliary tunneling apparatus | Kazunari Kawai, Shinichi Terada, Masaaki Uetake, Hiroshi Asano, Takashi Minami +1 more | 2017-04-11 |
| 9388690 | Tunnel excavation method | Kazunari Kawai, Shinichi Terada, Masaaki Uetake, Hiroshi Asano, Takashi Minami +1 more | 2016-07-12 |