Issued Patents 1989
Showing 1–2 of 2 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 4833015 | Multilayer foam glass with dense glass surface layer and method of producing same | Toshiharu Furuuchi, Yoshiaki Tsuji | 1989-05-23 |
| 4798758 | Foam glass having crust layer and method of producing same | Akira Nakanishi, Tomoyoshi Hiraki, Akira Ueno, Shoji Takahashi, Shuhei Kobayashi +2 more | 1989-01-17 |