Issued Patents All Time
Showing 1–5 of 5 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 12065932 | Excavation tool replacement device and tunnel boring machine | — | 2024-08-20 |
| 9222356 | Drill bit exchange device for shield tunneling machine | — | 2015-12-29 |
| 9140124 | Excavation machine | Masanori Kobayashi, Kazuya Kokai | 2015-09-22 |
| 8540319 | Bit replacing device for excavating machine | — | 2013-09-24 |
| 8523288 | Bit replacing device for excavating machine | Kenji Sudoh, Isao Shimada | 2013-09-03 |