Issued Patents All Time
Showing 1–2 of 2 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 5174821 | Hydraulic composition, formed products therefrom and segregation reduction agent for hydraulic substances | Yasunori Matsuoka, Takefumi Shindoh, Kazunao Yokota, Akira Haze, Kiyoshi Nara | 1992-12-29 |
| 4774045 | Concrete structural member and method for manufacture thereof | Shizuko Kushida, Takashi Tsubahara, Seiji Kaneko, Yasunori Matsuoka, Takefumi Shindo | 1988-09-27 |