Issued Patents All Time
Showing 1–2 of 2 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 9574313 | Tsunami breakwater wall of retaining wall structure supported by steel pipe piles and its construction method | Kazufumi Kawahara, Yuichi Shimizu | 2017-02-21 |
| 8931976 | Tsunami breakwater wall of multilayered steel pipe pile structure and its construction method | Kazufumi Kawahara, Yuichi Shimizu | 2015-01-13 |