Issued Patents All Time
Showing 26–48 of 48 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 5846025 | Apparatus and a method for lining an underground pipe | Takao Kamiyama, Shigeru Endoh, Hiroyuki Aoki | 1998-12-08 |
| 5780123 | Tubular liner and a method for connecting ends of liner tubes | Takao Kamiyama | 1998-07-14 |
| 5736077 | Method for lining a manhole | Takao Kamiyama | 1998-04-07 |
| 5700110 | Method for lining a bent pipe | Takao Kamiyama | 1997-12-23 |
| 5698056 | Method for manufacturing a tubular liner bag | Takao Kamiyama | 1997-12-16 |
| 5598873 | Branch pipe lining method and liner | Takao Kamiyama, Shigeru Endoh | 1997-02-04 |
| 5566719 | Method for lining a branch pipe of an underground pipe | Takao Kamiyama | 1996-10-22 |
| 5549856 | Method of repairing a pipeline with an injected resin | — | 1996-08-27 |
| 5540613 | Cutter apparatus | Takao Kamiyama, Shigeru Endoh | 1996-07-30 |
| 5520484 | Eversion nozzle, and a method for repairing an underground tubular conduit | Takao Kamiyama, Shigeru Endoh | 1996-05-28 |
| 5503190 | Method for repairing a tubular conduit | Takao Kamiyama | 1996-04-02 |
| 5501115 | Method of inspecting a pipe liner bag | Takao Kamiyama, Shigeru Endoh | 1996-03-26 |
| 5498389 | Method and apparatus for lining a branch pipe | Takao Kamiyama, Shigeru Endoh | 1996-03-12 |
| 5490964 | Method and device for repairing a tubular conduit | Takao Kamiyama, Shigeru Endoh | 1996-02-13 |
| 5486332 | Method for everting a tubular liner bag | Takao Kamiyama | 1996-01-23 |
| 5474823 | Pipe liner bag, manufacturing method therefor and pipe repair method | Takao Kamiyama | 1995-12-12 |
| 5454401 | Method of lining a branch pipe | Takao Kamiyama, Shigeru Endoh | 1995-10-03 |
| 5439033 | Method of lining a branch pipe | Takao Kamiyama, Shigeru Endoh | 1995-08-08 |
| 5407483 | Method for impregnating a lining material with a hardenable resin | — | 1995-04-18 |
| 5356502 | Method for lining a branch pipe | Takao Kamiyama | 1994-10-18 |
| 5354586 | Tubular lining material and a method for impregnating the same with a hardenable resin | Hiroyuki Aoki | 1994-10-11 |
| 5348764 | Method for impregnating a lining material with a hardenable resin | — | 1994-09-20 |
| 5225121 | Method for repairing a pipe | — | 1993-07-06 |