Issued Patents All Time
Showing 1–11 of 11 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 7341403 | Method of constructing information correspondence pipe, constructed structure, and construction member | Fumiaki Tsuchiya, Masaru Yamakawa, Yasuhiro Ueda, Osamu Ishizuka, Koji Aso +3 more | 2008-03-11 |
| 7179019 | Method and structure for laying communication cable in underground line, and members used for laying | Ichiro Seto, Fumiaki Tsuchiya, Katsuhiko Azuma, Nobuyasu Kishibe, Koji Aso +1 more | 2007-02-20 |
| 5197540 | Boring device for lining material in branched portions of lined conduit | Hideo Maruyama, Masaru Yamakawa, Yoshifumi Osaka | 1993-03-30 |
| 4948452 | Apparatus for lining pipe lines including liquid seal means | Akio Morinaga, Hideo Maruyama, Akifumi Yamamoto | 1990-08-14 |
| 4883557 | Method for lining pipe lines with a pressurized gas | Akio Morinaga, Hideo Maruyama, Akifumi Yamamoto | 1989-11-28 |
| 4871413 | Apparatus for manufacturing tubular lining material | Masakatsu Hyodo, Koji Kusumoto | 1989-10-03 |
| 4723579 | Lining material for pipe lines | Masakatsu Hyodo | 1988-02-09 |
| 4684556 | Tubular lining material for pipe line | Hisao Ohtsuga, Akio Morinaga, Yoichi Sakaguchi, Masakatsu Hyodo | 1987-08-04 |
| 4681783 | Tubular lining material for pipe lines | Masakatsu Hyodo | 1987-07-21 |
| 4600615 | Tubular lining material and a method and apparatus for manufacturing same | Masakatsu Hyodo, Koji Kusumoto | 1986-07-15 |
| 4576205 | Tubular lining material for pipe lines having bends | Akio Morinaga, Yoichi Sakaguchi, Masakatsu Hyodo | 1986-03-18 |