Issued Patents All Time
Showing 1–3 of 3 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 5174821 | Hydraulic composition, formed products therefrom and segregation reduction agent for hydraulic substances | Takefumi Shindoh, Kazunao Yokota, Takafumi Naito, Akira Haze, Kiyoshi Nara | 1992-12-29 |
| 4774045 | Concrete structural member and method for manufacture thereof | Shizuko Kushida, Takashi Tsubahara, Takafumi Naito, Seiji Kaneko, Takefumi Shindo | 1988-09-27 |
| 4431310 | Method of preparing kneaded compositions | Yasuro Ito, Yoshiro Higuchi, Masanori Tsuji, Hideharu Kaga, Yasuhiro Yamamoto +5 more | 1984-02-14 |