Issued Patents All Time
Showing 1–2 of 2 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 5673579 | Welded steel pipe manufacturing apparatus and method | Yuuji Hashimoto, Takaaki Toyooka, Motoaki Itadani, Tsutomu Ide | 1997-10-07 |
| 5301869 | Machine for manufacturing welded steel pipes and method for handling the machine | Takaaki Toyooka, Yuuji Hashimoto, Tsutomu Ide | 1994-04-12 |