Issued Patents 2011
Showing 1–2 of 2 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 8025461 | Lining material and pipeline lining method | Takao Kamiyama, Kenji Fujii, Fuminori Tanaka | 2011-09-27 |
| 7955026 | Method for rehabilitating a manhole | Takao Kamiyama, Kenji Fujii, Katsuyori Miura | 2011-06-07 |