Issued Patents All Time
Showing 1–3 of 3 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 5858073 | Method of treating electroless plating bath | Fujio Matsui | 1999-01-12 |
| 5034127 | Filter assembly for purifying brine | Aisaburo Yagishita | 1991-07-23 |
| 4746441 | Method of purifying brine for electrolytic chemical production | Aisaburo Yagishita | 1988-05-24 |