Issued Patents All Time
Showing 1–3 of 3 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 4545702 | Boring-injection device, method for improving ground by means of the device and method for investigating ground state by means of the device | Hisashi Kitajima, Hiroshi Iimori, Tadashi Nishio | 1985-10-08 |
| 4514112 | Method for injecting grouting agent and apparatus for conducting the method | Hisashi Kitajima, Hiroshi Iimori, Tadashi Nishio | 1985-04-30 |
| 4403891 | Stabilizer for excavated surface | Shinkichi Ohoka | 1983-09-13 |