Issued Patents All Time
Showing 1–7 of 7 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 6421938 | Endless chain type cutter | — | 2002-07-23 |
| 5561923 | Excavating apparatus | — | 1996-10-08 |
| 5349765 | Excavator for constructing underground continuous wall and construction method using the excavator | Takehiko Kitanaka | 1994-09-27 |
| 5257471 | Excavator for forming underground continuous wall | — | 1993-11-02 |
| 5244315 | Excavator for constructing underground continuous wall and underground continuous wall construction method | Takehiko Kitanaka | 1993-09-14 |
| 5013191 | Cast-in-place piling method and apparatus | — | 1991-05-07 |
| 4616720 | Divided-bucket type rotary excavator | — | 1986-10-14 |