Issued Patents All Time
Showing 1–6 of 6 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 5174820 | Durability improving agent for cement-hydraulic-set substances, method of improving same, and cement-hydraulic-set substances improved in durability | Toshio Saito, Kunio Yanagibashi | 1992-12-29 |
| 5009713 | Cement composition and a process for preparation thereof | Toshiharu Urano, Kyoichi Tanaka, Masashi Sugiyama, Shyuzo Endoh, Keisuke Fujioka | 1991-04-23 |
| 4975121 | Durability improving agent for cement-hydraulic-set substances, method of improving same, and cement-hydraulic-set substances improved in durability | Toshio Saito, Kunio Yanagibashi | 1990-12-04 |
| 4743301 | Concrete composition for underwater use | Koichi Ito, Yasuhiko Yoshioka, Tadahiro Kaya, Tsunetoshi Shioya, Hiroyuki Yamakawa +1 more | 1988-05-10 |
| 4508572 | Cement composition for laying underwater | Soichi Kiya, Iwao Uchizaki, Yasuhiko Yoshioka, Koichi Ito, Tadahiro Kaya +3 more | 1985-04-02 |
| 4487633 | Water-inseparable concrete composition | Soichi Kiya, Iwao Uchizaki, Yasuhiko Yoshioka, Koichi Ito, Toshio Saito +3 more | 1984-12-11 |