Issued Patents All Time
Showing 1–2 of 2 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 5141366 | Method of improving ground and apparatus used therefor | Tomohiro Sakurada, Katsuhiko Kurihara, Takashi Miki, Goro Murai | 1992-08-25 |
| 4725169 | Grout impregnation method | Shunsuke Tazawa, Kenji Takeuchi, Akiyoshi Horiba, Syouichi Kashima, Mineo Murata | 1988-02-16 |