Issued Patents 2022
Showing 1–2 of 2 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 11473714 | Strip member for spiral pipe and rehabilitation method of existing pipe | Yuuta Miyatake, Hiroshi Sugahara, Yoshirou Sugiyama | 2022-10-18 |
| 11383427 | Pipe-forming apparatus for spiral pipe and pipe-forming method thereof | Hiroshi Sugahara, Naoya Tsuda, Masahiro Yamasaki | 2022-07-12 |