Issued Patents All Time
Showing 1–4 of 4 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 11473714 | Strip member for spiral pipe and rehabilitation method of existing pipe | Yuuta Miyatake, Hiroshi Sugahara, Tatsurou Baba | 2022-10-18 |
| 11015757 | Pipe-making apparatus and pipe-making method | Hiroshi Sugahara, Tatsurou Baba, Masahiro Yamasaki | 2021-05-25 |
| 10920918 | Pipe-making apparatus and pipe-making method for spiral pipe | Hiroshi Sugahara, Tatsurou Baba, Masahiro Yamasaki, Junichi Nagatsuka | 2021-02-16 |
| D876001 | Strip member for pipes | Hiroshi Sugahara, Yuuta Miyatake | 2020-02-18 |