Issued Patents All Time
Showing 1–1 of 1 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 4986854 | Method of improving quality of mortar or concrete structures and additives therefor | Yoshitaka Kanayama | 1991-01-22 |
Showing 1–1 of 1 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 4986854 | Method of improving quality of mortar or concrete structures and additives therefor | Yoshitaka Kanayama | 1991-01-22 |