Issued Patents All Time
Showing 1–15 of 15 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 5993581 | Adhesive composition for bonding a lining tube on to the internal surface of an existing pipe | Shigeru Toyoda, Shuichi Yagi, Yukio Sato, Kiyoshi Shinkado | 1999-11-30 |
| 5983948 | Method of repairing an existing pipeline including a main pipe and a branch pipe | Shuichi Yagi, Kenji Morita | 1999-11-16 |
| 5899636 | Reversible lining tube for repairing an existing pipeline | Shigeru Toyoda, Shuichi Yagi, Kazuki Okabe | 1999-05-04 |
| 5888302 | Suction system for use in a method of lining the internal surface of a pipe | Shigeru Toyoda, Shuichi Yagi | 1999-03-30 |
| 5873390 | Methods of lining the internal surface of a pipe | Shinobu Satake, Tadao Yahata, Takashi Shigefuji, Shigeru Toyoda, Shuichi Yagi | 1999-02-23 |
| 5855712 | Method of repairing an existing pipe | Shigeru Toyoda, Shuichi Yagi | 1999-01-05 |
| 5853629 | Method of lining the internal surface of a pipe | Shigeru Toyoda, Shuichi Yagi | 1998-12-29 |
| 5740838 | Methods of lining the internal surface of a pipe | Shinobu Satake, Tadao Yahata, Takashi Shigefuji, Shigeru Toyoda, Shuichi Yagi | 1998-04-21 |
| 5716672 | Methods of lining the internal surface of a pipe | Shigeru Toyoda, Shuichi Yagi | 1998-02-10 |
| 5700405 | Method of lining the internal surface of a pipe | Shigeru Toyoda, Shuichi Yagi | 1997-12-23 |
| 5667841 | Methods of lining the internal surface of a pipe | Shigeru Toyoda, Shuichi Yagi | 1997-09-16 |
| 5632818 | Liquid injection apparatus for use in a method of lining the internal surface of a pipe | Shigeru Toyoda, Shuichi Yagi | 1997-05-27 |
| 5609186 | Methods of lining the internal surface of a pipe | Shinobu Satake, Tadao Yahata, Takashi Shigefuji, Shigeru Toyoda, Shuichi Yagi | 1997-03-11 |
| 5590689 | Method for lining the internal surface of a pipe | Shigeru Toyoda, Shuichi Yagi, Nobukatsu Ike, Kenji Ohshima | 1997-01-07 |
| 5447664 | Method of lining an inner surface of a pipe | Takanori Ito, Masaki Natori, Shigeru Toyoda | 1995-09-05 |