Issued Patents 2002
Showing 1–2 of 2 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 6467510 | Pipe formed by bending rolls | Michio Yamashita, Hideo Abe, Singo Emi, Nobuo Tomizawa | 2002-10-22 |
| 6339946 | Pipe forming apparatus and method | Michio Yamashita, Hideo Abe, Shingo Emi, Nobuo Tomizawa | 2002-01-22 |