Issued Patents 2003
Showing 1–1 of 1 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 6630020 | Cement additive, and concrete composition and structure both containing the same | Yoshihide Shimoyama, Takashi Ayata, Satoshi Tanaka | 2003-10-07 |
Showing 1–1 of 1 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 6630020 | Cement additive, and concrete composition and structure both containing the same | Yoshihide Shimoyama, Takashi Ayata, Satoshi Tanaka | 2003-10-07 |