Issued Patents 1997
Showing 1–4 of 4 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 5650238 | Zinc-electroplated steel sheet | Takayuki Urakawa, Hideharu Koga, Toru Imokawa | 1997-07-22 |
| 5641578 | Weldable black steel sheet | Naoto Yoshimi, Masaaki Yamashita, Toshiyuki Ookuma, Tatsuya Miyoshi, Tsutomu Watanabe | 1997-06-24 |
| 5629099 | Alloying-treated iron-zinc alloy dip-plated steel sheet excellent in press-formability and method for manufacturing same | Michitaka Sakurai, Kenji Tahara, Junichi Inagaki | 1997-05-13 |
| 5609968 | Weldable colored steel sheet | Naoto Yoshimi, Masaaki Yamashita, Toshiyuki Ookuma, Tatsuya Miyoshi | 1997-03-11 |