Issued Patents All Time
Showing 1–3 of 3 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 6796334 | Duct repairing material, repairing structure, and repairing method | Masatoshi Ishikawa, Hitoshi Saito | 2004-09-28 |
| 5671778 | Repairing tube, method for repairing pipe lines therewith and method for removing the repairing tube | Hiroyuki Sakuragi, Masahiro Seshimo, Shinichi Takebe, Takuji Sokawa, Hitoshi Saito | 1997-09-30 |
| 5186987 | Lining material for pipe lines and a process for providing pipe lines therewith | Takayoshi Imoto, Masahiro Seshimo, Eiji Kitagawa | 1993-02-16 |