Issued Patents 2005
Showing 1–2 of 2 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 6919388 | Cement admixture and cement composition | Hirokatsu Kawakami, Daisuke Imai, Hiromichi Tanaka, Tsuyoshi Hirata, Tsutomu Yuasa | 2005-07-19 |
| 6864337 | Polycarboxylic acid copolymer, production method and use thereof | Tsutomu Yuasa, Noboru Sakamoto, Tsuyoshi Hirata, Hiroko Izukashi, Tomiyasu Ueta +3 more | 2005-03-08 |