Issued Patents 1989
Showing 1–1 of 1 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 4870120 | Cement dispersant | Tsuneo Tsubakimoto, Hideyuki Tahara, Hiroya Kobayashi, Hiroshi Ito | 1989-09-26 |
Showing 1–1 of 1 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 4870120 | Cement dispersant | Tsuneo Tsubakimoto, Hideyuki Tahara, Hiroya Kobayashi, Hiroshi Ito | 1989-09-26 |