Issued Patents All Time
Showing 1–3 of 3 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 4428792 | Method of forming a structural column | Satoshi Nakagawa | 1984-01-31 |
| 4398841 | Column-to-beam connector | Hajime Kojima, Kazuhiko Hirata, Satoshi Nakagawa, Takahira Ueoka | 1983-08-16 |
| 4387546 | Structural column and method of manufacture | Satoshi Nakagawa | 1983-06-14 |