Issued Patents 1989
Showing 1–1 of 1 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 4812169 | Process for producing a fire-resistant, light-weight construction material | Sadaji Matsuura, Yasuo Arai, Shigeki Aoki | 1989-03-14 |
Showing 1–1 of 1 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 4812169 | Process for producing a fire-resistant, light-weight construction material | Sadaji Matsuura, Yasuo Arai, Shigeki Aoki | 1989-03-14 |