Issued Patents All Time
Showing 1–2 of 2 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 4715719 | Method of preparing mortar or concrete | Yasuro Ito, Yoshiro Higuchi, Yukikazu Tsuji, Masanori Tsuji, Mitsutaka Hayakawa | 1987-12-29 |
| 4686852 | Method of preparing mortar or concrete | Yasuro Ito, Yoshiro Higuchi, Yukikazu Tsuji, Masanori Tsuji, Mitsutaka Hayakawa | 1987-08-18 |