Issued Patents 1997
Showing 1–2 of 2 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 5646199 | Composition for mold | Akira Yoshida, Kazuhiko Kiuchi, Akio Mamba, Hitoshi Funada | 1997-07-08 |
| 5602192 | Process for producing sand mold | Akira Yoshida, Tsutomu Tanaka, Katsumi Matsuyama, Kazuhiko Kiuchi | 1997-02-11 |