Issued Patents All Time
Showing 1–15 of 15 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 5624996 | Dispersion of fine particles of modified polyethylene and process for preparation thereof | Takeo Kigami, Kunihiko Yorihiro, Toshihiko Okada | 1997-04-29 |
| 5164237 | Lining material for pipelines | Shigeo Kaneda, Hitoshi Saito, Masahiro Seshimo | 1992-11-17 |
| 5077107 | Lining material for pipelines | Shigeo Kaneda, Hitoshi Saito, Masahiro Seshimo | 1991-12-31 |
| 5010132 | Water-base paint for coating the inside surface of metallic can | Takeo Kigami | 1991-04-23 |
| 4956038 | Method for lining pipe lines | Masakatsu Hyodo, Tomiyo Nishimoto, Hiroyuki Sakuragi, Shinji Onishi | 1990-09-11 |
| 4948452 | Apparatus for lining pipe lines including liquid seal means | Isaburo Yagi, Hideo Maruyama, Akifumi Yamamoto | 1990-08-14 |
| 4883557 | Method for lining pipe lines with a pressurized gas | Isaburo Yagi, Hideo Maruyama, Akifumi Yamamoto | 1989-11-28 |
| 4882470 | Boring device for opening passages to branch portions of a lined main pipe line | Katsuaki Zenbayashi, Hisao Otsuga, Osamu Toyoshima, Shinji Shimokawa | 1989-11-21 |
| 4877665 | Lining material for pipe lines | Kumao Higuchi, Masahiro Seshimo, Hitoshi Saito | 1989-10-31 |
| 4684556 | Tubular lining material for pipe line | Hisao Ohtsuga, Yoichi Sakaguchi, Masakatsu Hyodo, Isaburo Yagi | 1987-08-04 |
| 4584963 | System for repairing joints in pipes laid underground | Mitsutoshi Hayashi, Motoyuki Koga | 1986-04-29 |
| 4576205 | Tubular lining material for pipe lines having bends | Yoichi Sakaguchi, Masakatsu Hyodo, Isaburo Yagi | 1986-03-18 |
| 4368091 | Method for providing the inner surface of a pipe with a flexible tubular lining material through a liquid resin under pressure | Hisao Ontsuga, Akira Morita | 1983-01-11 |
| 4350548 | Method and apparatus for providing the inner surface of a pipe line with a lining | Katsuaki Zenbayashi, Masao Hirayama, Akira Morita | 1982-09-21 |
| 4334943 | Method for smoothly evaginating a tubular material under pressure | Katsuaki Zenbayashi, Masao Hirayama, Akira Morita | 1982-06-15 |