Issued Patents All Time
Showing 1–3 of 3 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 4981626 | Method of forming dense concrete surface layer | — | 1991-01-01 |
| 4508572 | Cement composition for laying underwater | Masaharu Sakuta, Soichi Kiya, Yasuhiko Yoshioka, Koichi Ito, Tadahiro Kaya +3 more | 1985-04-02 |
| 4487633 | Water-inseparable concrete composition | Masaharu Sakuta, Soichi Kiya, Yasuhiko Yoshioka, Koichi Ito, Toshio Saito +3 more | 1984-12-11 |