Issued Patents All Time
Showing 1–3 of 3 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 5452213 | Process and apparatus for preparing mixture comprising granular materials such as sand, powder such as cement and liquid | Yasuro Ito, Toshio Hirose, Hajime Okamura | 1995-09-19 |
| 4715719 | Method of preparing mortar or concrete | Yasuro Ito, Yoshiro Higuchi, Takeshi Shiki, Masanori Tsuji, Mitsutaka Hayakawa | 1987-12-29 |
| 4686852 | Method of preparing mortar or concrete | Yasuro Ito, Yoshiro Higuchi, Takeshi Shiki, Masanori Tsuji, Mitsutaka Hayakawa | 1987-08-18 |