Issued Patents All Time
Showing 1–5 of 5 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 5011744 | Black surface treated steel sheet | Yoshio Shindou, Toshimichi Murata, Fumio Yamazaki, Takashi Shimazu | 1991-04-30 |
| 4861441 | Method of making a black surface treated steel sheet | Yoshio Shindou, Toshimichi Murata, Fumio Yamazaki, Takashi Shimazu | 1989-08-29 |
| 4792499 | Zn-Al hot-dip galvanized steel sheet having improved resistance against secular peeling and method for producing the same | Yoshio Shindou, Motoo Kabeya | 1988-12-20 |
| 4369211 | Process for producing a hot dip galvanized steel strip | Hajime Nitto, Kango Sakai | 1983-01-18 |
| 4251329 | Process for producing a highly corrosion resistant electroplated steel sheet | Hidejiro Asano, Joji Oka, Masashi Takasugi | 1981-02-17 |