Issued Patents All Time
Showing 1–3 of 3 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 6437027 | Process for producing dispersant for powdery hydraulic composition | Hirotaka Isomura, Hiroshi Hayashi, Kazuhisa Tsukada, Kenjiro Makino, Masaki Takimoto | 2002-08-20 |
| 5733367 | Cement composition | Katsuo Hosono, Hiroshi Hayashi, Kazuo Yamada, Makoto Matsuhisa, Satoru Ashiyahara +3 more | 1998-03-31 |
| 4354877 | Demolition agent, its preparation and its use | Toshio Kawano, Shiro Ishii, Jyunichiro Migita | 1982-10-19 |