Issued Patents All Time
Showing 1–2 of 2 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 5397654 | Abrasion-resistant welded steel pipe | Shigeru Endo, Moriyasu Nagae, Osamu Hirano | 1995-03-14 |
| 4464209 | Clad steel pipe excellent in corrosion resistance and low-temperature toughness and method for manufacturing same | Tadaaki Taira, Junichiro Takehara, Yasuo Kobayashi | 1984-08-07 |