Issued Patents All Time
Showing 1–2 of 2 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 5772891 | Water treating method for treating waste water by using ion exchange resin | Kazuyuki Yamasaki, Yoshihiro Hamaguchi | 1998-06-30 |
| 5707514 | Water treating method and apparatus treating waste water by using ion exchange resin | Kazuyuki Yamasaki, Yoshihiro Hamaguchi | 1998-01-13 |