Issued Patents All Time
Showing 1–3 of 3 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 5671778 | Repairing tube, method for repairing pipe lines therewith and method for removing the repairing tube | Hiroyuki Sakuragi, Masahiro Seshimo, Futoshi Makimoto, Shinichi Takebe, Hitoshi Saito | 1997-09-30 |
| 4724178 | Lining material for pipe lines | Masakatsu Hyodo, Koji Kusumoto | 1988-02-09 |
| 4686126 | Tubular lining material for city water pipe lines | Masakatsu Hyodo, Koji Kusumoto | 1987-08-11 |