Issued Patents All Time
Showing 1–2 of 2 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 4524111 | Weldable paint-coated steel sheets having excellent corrosion resistance | Joji Oka, Hideaki Iwakura, Narumi Ando, Kiyotoshi Iwasaki | 1985-06-18 |
| 4522892 | Method for producing a steel strip having an excellent phosphate-coating property | Masaya Tsutsumi, Wataru Hotta, Yujiro Miyauchi | 1985-06-11 |