Issued Patents 2004
Showing 1–3 of 3 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 6782921 | High-strength steel pipe excellent in formability and burst resistance | Takuya Hara, Hitoshi Asahi, Hideki Miyazaki, Tatsuya Yoshida | 2004-08-31 |
| 6742852 | Rubber crawler | Koji Nakayama | 2004-06-01 |
| 6705648 | Pipe joint | Kazushi Maruyama, Haruyuki Nagayoshi | 2004-03-16 |