Issued Patents 2005
Showing 1–4 of 4 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 6946505 | Cement dispersant, its production process, and cement composition using the cement dispersant | Tsutomu Yuasa, Noboru Sakamoto | 2005-09-20 |
| 6919388 | Cement admixture and cement composition | Tomotaka Nishikawa, Hirokatsu Kawakami, Daisuke Imai, Hiromichi Tanaka, Tsutomu Yuasa | 2005-07-19 |
| 6911494 | Cement admixture and cement composition | Akihiko Yamashita, Hiromichi Tanaka, Toru Uno, Yoshiyuki Onda | 2005-06-28 |
| 6864337 | Polycarboxylic acid copolymer, production method and use thereof | Tsutomu Yuasa, Tomotaka Nishikawa, Noboru Sakamoto, Hiroko Izukashi, Tomiyasu Ueta +3 more | 2005-03-08 |