Issued Patents All Time
Showing 1–3 of 3 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 6357506 | Joining apparatus of thermoplastic pipes | Hirokazu Nomura, Wenjie Mao | 2002-03-19 |
| 6029727 | Jointing apparatus of thermo plastic pipes | Hirokazu Nomura, Wenjie Mao | 2000-02-29 |
| 4320277 | Thick welded steel pipe of large diameter and production thereof | Tadaaki Taira, Hiroyuki Ichinose, Osamu Hirano, Motoaki Suzuki | 1982-03-16 |