Issued Patents 1997
Showing 1–1 of 1 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 5647988 | Method of back-washing submerged-type ceramic membrane separation apparatus | Toshio Kawanishi, Shigeki Yokoyama, Katsuro Ishihara, Yoshihisa Narukami, Mikiharu Tokushima +1 more | 1997-07-15 |