Issued Patents All Time
Showing 1–3 of 3 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 4931314 | Method for preventing hardened cementitious material from deteriorating | Makoto Takakura, Takahiro Hori, Yuji Nakamura | 1990-06-05 |
| 4521249 | Silicate containing agent and cement surface modified with said agent | Masamichi Obitsu, Takahiro Hori, Toyoji Koinuma | 1985-06-04 |
| 4443496 | Agent and method for modifying surface layer of cement structures | Masamichi Obitsu, Takahiro Hori, Toyoji Koinuma | 1984-04-17 |