Issued Patents All Time
Showing 1–3 of 3 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 6267890 | Method of operating spiral wound type membrane module | Keiji Uemura | 2001-07-31 |
| 5858229 | Spiral wound type membrane module | Keiji Uemura | 1999-01-12 |
| 5183562 | Apparatus for coagulating treatment | Toshio Totoki, Yoshio Yasukawa | 1993-02-02 |