Issued Patents All Time
Showing 1–2 of 2 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 8353983 | Shrinkage reducing agent | Raita Iwata, Tomomi Sugiyama | 2013-01-15 |
| 6642320 | Multi-functional cement dispersants and hydraulic cement compositions | Hiroshi Nakanishi, Masaki Ishimori, Minoru Yaguchi, Tomomi Sugiyama, Mitsuo Kinoshita +1 more | 2003-11-04 |