Issued Patents All Time
Showing 26–32 of 32 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 6174980 | Cement dispersant, method for producing polycarboxylic acid for cement dispersant and cement composition | Tsuyoshi Hirata, Katsuhisa Shiote, Koichiro Nagare, Syogo Iwai | 2001-01-16 |
| 6165262 | Cement additive and cement composition using same | Katsuyuki Kono, Tsuyoshi Hirata | 2000-12-26 |
| 6166112 | Cement admixture and cement composition | Tsuyoshi Hirata, Koichiro Nagare | 2000-12-26 |
| 6087418 | Cement admixture and cement composition | Akihiko Yamashita, Tsuyoshi Hirata, Hirokazu Niwa | 2000-07-11 |
| 6048916 | Method for dispersion of cement | Tsuyoshi Hirata, Katsuhisa Shiote, Shogo Iwai, Koichiro Nagare, Hideyuki Tahara | 2000-04-11 |
| 5925184 | Cement composition | Tsuyoshi Hirata, Toru Uno, Koichiro Nagare, Hideyuki Tahara, Shogo Iwai | 1999-07-20 |
| 5912284 | Cement additive, its production process and use | Tsuyoshi Hirata, Katsuhisa Shiote, Syogo Iwai, Koichiro Nagare | 1999-06-15 |