Issued Patents All Time
Showing 1–5 of 5 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 6397896 | Heat and corrosion resistant steel pipe having multi-layered coating | Teruhisa Takahashi, Masayoshi Usui | 2002-06-04 |
| 6071631 | Heat-resistant and anticorrosive lamellar metal-plated steel material with uniform processability and anticorrosiveness | — | 2000-06-06 |
| 5422192 | Steel product with heat-resistant, corrosion-resistant plating layers | Teruhisa Takahashi | 1995-06-06 |
| 5265793 | Small thick-walled composite metal tubing and process of producing the same | Masayoshi Usui, Yuzo Hitachi | 1993-11-30 |
| 5059493 | Heat and corrosion resistant plating | — | 1991-10-22 |