Issued Patents All Time
Showing 1–2 of 2 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 5498349 | Filtration concentration apparatus and method | Yoichi Kurahashi, Yoshifumi Usui, Aisaburo Yagishita | 1996-03-12 |
| 4717486 | Method of filtering suspension | Monpei Shirato, Eiji Iritani, Aisaburo Yagishita | 1988-01-05 |