Issued Patents All Time
Showing 1–7 of 7 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 9746121 | Spacer for positioning a rehabilitating pipe | Takao Kamiyama, Makoto Ishida, Takeshi Hasegawa, Takashi Okubo | 2017-08-29 |
| 8568060 | Rehabilitating pipe segment and existing pipe rehabilitation method using same | Takao Kamiyama, Koji Kaneta, Kenji Fujii | 2013-10-29 |
| 8360684 | Method for linking segments and linking tool | Takao Kamiyama, Koji Kaneta, Kenji Fujii | 2013-01-29 |
| 8240339 | Existing pipe rehabilitation method | Takao Kamiyama, Koji Kaneta, Kenji Fujii | 2012-08-14 |
| 7955026 | Method for rehabilitating a manhole | Takao Kamiyama, Koji Kaneta, Kenji Fujii | 2011-06-07 |
| 7713374 | Pipeline lining method | Takao Kamiyama, Koji Kaneta, Kenji Fujii | 2010-05-11 |
| 7017613 | Segment for rehabilitating pipe assembly | Makoto Ishida, Koji Kaneta, Kenji Fujii, Takao Kamiyama | 2006-03-28 |