Issued Patents All Time
Showing 1–2 of 2 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 4630846 | Pipe joint | Yoshinori Nishino, Masahiko Yamamoto, Tadayoshi Uda | 1986-12-23 |
| 4624486 | Structure at resin pipe connections | Yoshinori Nishino, Masahiko Yamamoto, Tadayoshi Uda, Kenji Nakagawa | 1986-11-25 |