Issued Patents All Time
Showing 1–3 of 3 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 7670425 | Ultra high strength fiber-reinforced cement composition, ultra high strength fiber-reinforced mortar or concrete and ultra high strength cement additives | Yoshiharu Watanabe, Kazuhiro Aizawa, Kazunori Takada, Yoshihiro Hishiki, Toshio Ohno +3 more | 2010-03-02 |
| 6524465 | Method of supplying electric current to prestressed concrete | Kouichi Ishibashi | 2003-02-25 |
| 4752151 | Coupling device for force transmitting member | Seiichi Koyama, Kiyoshi Shirakawa, Toshiyuki Tamaki, Akira Yamazaki | 1988-06-21 |