Issued Patents All Time
Showing 1–5 of 5 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 4894167 | Process for removing heavy metal cations and/or alkali metal cations from aqueous solutions with an ion exchanger material | Wolfgang Holl, Jurgen Horst | 1990-01-16 |
| 4894168 | Process for the removal of cations of an alkaline earth metal species from aqueous solutions with an ion exchanger material | Wolfgang Holl, Jurgen Horst | 1990-01-16 |
| 4299922 | Method for regenerating anion exchange resins in bicarbonate form | Wolfgang Holl, Karl-Ekkehard Sester, Heinrich Sontheimer | 1981-11-10 |
| 4276160 | Method for waste water purification with the aid of a sorption agent | Dietfried Donnert, Gerhard Endres | 1981-06-30 |
| 4230565 | Method for purifying phosphate containing waste waters | Dietfried Donnert | 1980-10-28 |