Issued Patents All Time
Showing 1–2 of 2 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 4419134 | Organic phosphoric ester containing water-dispersible aluminum paste as foaming agent in light-weight foamed concrete | Shizuo Ishijima, Yukio Hayashi | 1983-12-06 |
| 4350535 | Water-dispersible paste composition of metal powder | Shizuo Ishijima, Yukio Hayashi | 1982-09-21 |