Issued Patents All Time
Showing 1–3 of 3 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 4743301 | Concrete composition for underwater use | Koichi Ito, Masaharu Sakuta, Yasuhiko Yoshioka, Tadahiro Kaya, Hiroyuki Yamakawa +1 more | 1988-05-10 |
| 4508572 | Cement composition for laying underwater | Masaharu Sakuta, Soichi Kiya, Iwao Uchizaki, Yasuhiko Yoshioka, Koichi Ito +3 more | 1985-04-02 |
| 4487633 | Water-inseparable concrete composition | Masaharu Sakuta, Soichi Kiya, Iwao Uchizaki, Yasuhiko Yoshioka, Koichi Ito +3 more | 1984-12-11 |