Issued Patents All Time
Showing 1–2 of 2 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 6143422 | Surface-treated steel sheet having improved corrosion resistance after forming | Hiroyuki Nagai, Yoshihiro Kawanishi, Hiroyuki Kashiwagi, Shinichi Tsuchiya | 2000-11-07 |
| 5932359 | Surface-treated steel sheet for fuel tanks | Hiroyuki Nagai, Yoshihiro Kawanishi, Hiroyuki Kashiwagi, Shinichi Tsuchiya | 1999-08-03 |