Issued Patents All Time
Showing 1–2 of 2 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 5431748 | Electric-resistance-welded steel pipe with high strength | Tatsuo Maeda, Toshihiro Takamura, Yoshiichi Ishizawa, Yuji Sugimoto, Tetsuro Sugayoshi +1 more | 1995-07-11 |
| 5286309 | Electric-resistance-welded steel pipe with high strength | Tatsuo Maeda, Toshihiro Takamura, Yoshiichi Ishizawa, Yuji Sugimoto, Tetsuro Sugayoshi +1 more | 1994-02-15 |