Issued Patents All Time
Showing 1–5 of 5 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 5021216 | Method of removing and crystallizing cation resin absorbed calcium and magnesium | Harold J. Kleiss | 1991-06-04 |
| 4493907 | Method of using higher concentration sulfuric acid for stripping and precipitation of adsorbed magnesium | Harold N. Hedrick | 1985-01-15 |
| 4461710 | Adjustably metered transfer of resin increments in folded bed ion exchange systems | William R. Erickson | 1984-07-24 |
| 4385993 | Method and apparatus for folded moving bed ion exchange system | Harold N. Hedrick | 1983-05-31 |
| 4363880 | Method of selectively removing adsorbed calcium and magnesium from cation exchange resins | William R. Erickson | 1982-12-14 |