Issued Patents 1997
Showing 1–1 of 1 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 5618355 | High-strength steel sheet suitable for deep drawing and process for producing the same | Kazuo Koyama, Matsuo Usuda, Manabu Takahashi, Yasuharu Sakuma, Shunji Hiwatashi | 1997-04-08 |