Issued Patents All Time
Showing 1–2 of 2 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 5445309 | Method for making a joint between a main pipe and a branch pipe and apparatus for use in the method | Yutaka Yoshino, Mitsuhira Kitada, Kazuo Seki | 1995-08-29 |
| 4670207 | Method of bonding plastic pipes | Osamu Sato, Takemi Tanaka | 1987-06-02 |