Issued Patents All Time
Showing 1–2 of 2 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 6402831 | Concrete containing aqueous slurry of ground calcium carbonate | Tadashi Yamauchi, Hidetoshi Morishita, Seiji Katayama, Yumiko Takase | 2002-06-11 |
| 5352290 | Concrete composition | Haruyuki Takeshita, Shohei Hoshino, Yoshiyuki Shoji | 1994-10-04 |