Issued Patents All Time
Showing 1–3 of 3 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 4861375 | Rust preventive composition for steel reinforcements | Shinsaku Tada | 1989-08-29 |
| 4683003 | Process for production of cellular concrete | Masaaki Ozawa | 1987-07-28 |
| 4655979 | Process for production of cellular concrete | Masaaki Ozawa | 1987-04-07 |