Issued Patents 2005
Showing 1–2 of 2 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 6946505 | Cement dispersant, its production process, and cement composition using the cement dispersant | Tsutomu Yuasa, Tsuyoshi Hirata | 2005-09-20 |
| 6864337 | Polycarboxylic acid copolymer, production method and use thereof | Tsutomu Yuasa, Tomotaka Nishikawa, Tsuyoshi Hirata, Hiroko Izukashi, Tomiyasu Ueta +3 more | 2005-03-08 |