Issued Patents All Time
Showing 1–11 of 11 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 9212094 | Polycarboxylic copolymer, cement dispersion agent, cement admixture, and cement composition | Kazutaka Otsuki, Akiko Yamauchi | 2015-12-15 |
| 8859702 | Polymer composition for cement dispersant and method for producing same | Naohiko Itayama | 2014-10-14 |
| 8076396 | Ultrarapid hardening cement composition and dispersant for ultrarapid hardening cement composition | Akira Ono, Hisashi Inokawa, Tsuyoshi Hirata, Masami Hattori | 2011-12-13 |
| 7717998 | Ultrafine particle grouting composition | Tomohiro KANAZAWA | 2010-05-18 |
| 7273524 | Concrete composition method of producing concrete compositions and cement admixture | Takashi Tomita | 2007-09-25 |
| 7232873 | Polycarboxylic acid cement dispersant and method for producing concrete secondary product | Takashi Tomita, Hiroko Okochi | 2007-06-19 |
| 6919388 | Cement admixture and cement composition | Tomotaka Nishikawa, Daisuke Imai, Hiromichi Tanaka, Tsuyoshi Hirata, Tsutomu Yuasa | 2005-07-19 |
| 6900275 | (Meth) acrylic acid (salt) polymer and its production process | Takashi Tomita, Tsutomu Yuasa | 2005-05-31 |
| 6545083 | Cement additive | Tsuyoshi Hirata, Tsutomu Yuasa, Koichiro Nagare | 2003-04-08 |
| 6486260 | Cement additive, cement composition and polycarboxylic acid polymer | Tsutomu Yuasa, Tsuyoshi Hirata | 2002-11-26 |
| 6258162 | Cement composition | Hirokazu Niwa, Hiromichi Tanaka, Tsutomu Yuasa, Tsuyoshi Hirata | 2001-07-10 |