Issued Patents All Time
Showing 1–2 of 2 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 7041262 | Method for separating metal ions | Shigekazu Tsurubou | 2006-05-09 |
| 5066404 | Method for separating sodium and potassium by ion exchange | Yoshinori Fujiki, Takayoshi Sasaki | 1991-11-19 |