Issued Patents All Time
Showing 1–1 of 1 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 5032236 | Process for producing a surface-blackened steel sheet | Yuujirou Miyauchi, Kazumi Shibata, Kouichi Wada | 1991-07-16 |
Showing 1–1 of 1 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 5032236 | Process for producing a surface-blackened steel sheet | Yuujirou Miyauchi, Kazumi Shibata, Kouichi Wada | 1991-07-16 |