Issued Patents All Time
Showing 1–3 of 3 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 4776161 | Unbonded PC steel strand | Syuzo Sato, Shigeo Shoji | 1988-10-11 |
| 4635433 | Unbonded PC steel strand | Shigeo Shoji | 1987-01-13 |
| 4304113 | Process of making plated wire for reinforcing rubber goods | Kunihiko Kataoka, Yoshitaka Udagawa, Shunichi Harada, Kozo Tsunoyama | 1981-12-08 |