Issued Patents 1989
Showing 1–2 of 2 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 4824876 | Light curable dental liquid or paste | Eiichi Yamada, Osamu Nakachi, Godo Irukayama, Yoshihiro Minoshima | 1989-04-25 |
| 4805695 | Counterflow heat exchanger with floating plate | Yoshitaka Ishikawa | 1989-02-21 |