Issued Patents 2002
Showing 1–1 of 1 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 6376581 | Cement dispersant, method for production thereof, and cement composition using the dispersant | Yoshio Tanaka, Akira Ohta, Tsuyoshi Hirata, Tsutomu Yuasa, Hideyuki Tahara | 2002-04-23 |