Issued Patents All Time
Showing 1–2 of 2 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 6663725 | High strength steel sheet and method for manufacturing the same | Tadashi Inoue, Hiroyasu Kikuchi, Sadanori Imada | 2003-12-16 |
| 5653899 | Method of making a steel pipe by electric resistance heating of opposing edges of a sheet prior to laser welding | Yoshiichi Ishizawa, Toshihiro Takamura, Yutaka Nagahama | 1997-08-05 |