Issued Patents 2003
Showing 1–3 of 3 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 6649275 | Zinc phosphate-treated galvanized steel sheet excellent in corrosion resistance and color tone | Kiyokazu Ishizuka | 2003-11-18 |
| 6649282 | Surface treated steel product prepared by tin-based plating or aluminum-based plating | Shinichi Yamaguchi, Jun Maki, Teruaki Izaki, Masao Kurosaki, Hisaaki Sato +1 more | 2003-11-18 |
| 6596414 | Phosphate-treated galvanized steel sheet excellent in corrosion resistance and paintability | Kiyokazu Ishizuka, Kimitaka Hayashi | 2003-07-22 |