Issued Patents All Time
Showing 1–3 of 3 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 4452061 | Seamless steel pipe manufacturing installation | Shinji Akita | 1984-06-05 |
| 4424616 | Conditioning line for steel pipes | Shinji Akita, Minoru Morita | 1984-01-10 |
| 4406141 | Straightening apparatus for steel pipes and the like | Shinji Akita | 1983-09-27 |