Issued Patents All Time
Showing 1–4 of 4 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 5297582 | Method for water leakage prevention in pipeline | Hidehiro Noda | 1994-03-29 |
| 5224742 | Method for cutting off water in pipeline and structure of connection portion in pipeline | Sinkiti Ooka, Yukio Suzuki, Hidehiro Noda | 1993-07-06 |
| 4545702 | Boring-injection device, method for improving ground by means of the device and method for investigating ground state by means of the device | Sakae Sano, Hiroshi Iimori, Tadashi Nishio | 1985-10-08 |
| 4514112 | Method for injecting grouting agent and apparatus for conducting the method | Sakae Sano, Hiroshi Iimori, Tadashi Nishio | 1985-04-30 |