Issued Patents All Time
Showing 1–2 of 2 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 4923812 | Process for producing erythritol | Nobuo Hattori, Yahei Takagi, Gaku Kawaguchi, Toshihiro Maeda | 1990-05-08 |
| 4478766 | Air diffuser for waste water treatment | Tetsuo Kataoka | 1984-10-23 |