Issued Patents All Time
Showing 1–2 of 2 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 4521249 | Silicate containing agent and cement surface modified with said agent | Masamichi Obitsu, Takahiro Hori, Yuriko Sakaguchi | 1985-06-04 |
| 4443496 | Agent and method for modifying surface layer of cement structures | Masamichi Obitsu, Takahiro Hori, Yuriko Sakaguchi | 1984-04-17 |