Issued Patents All Time
Showing 1–11 of 11 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 5612383 | Weakly basic anion exchangers, processes for their preparation by aminolysis and their use for removing sulphate ions from aqueous liquids | Franz-Rudolf Minz, Reinhold Klipper, Alfred Mitschker, Heiko Hoffmann | 1997-03-18 |
| 5441646 | Process of removing sulfate ions from water with a poly(meth)acrylamide exchange resin | Franz-Rudolf Minz, Reinhold Klipper, Alfred Mitschker, Heiko Hoffmann | 1995-08-15 |
| 5414020 | Process for the preparation of anion exchange resins of the poly(meth)acrylamide type | Friedrich Werner, Alfred Mitschker, Axel Ingendoh | 1995-05-09 |
| 5175193 | Process for the preparation of weakly acid cation exchange resins | Friedrich Werner, Alfred Mitschker, Herbert Diehl, Axel Schafer | 1992-12-29 |
| 4988738 | Process for the preparation of bifunctional anion exchange resins, new bifunctional anion exchange resins and use thereof | Alfred Mitschker, Peter M. Lange, Friedrich Werner, Hans-Karl Soest, Gunter Siegers | 1991-01-29 |
| 4705637 | Process for reducing the wash water requirement of weakly basic anion exchangers | Peter M. Lange, Friedrich Martinola | 1987-11-10 |
| 4483716 | Poultice method for extracting hazardous spills | — | 1984-11-20 |
| 4469502 | Ion exchanger fertilizers and a process for supplying plants with nutrients uniformly and over a long period of time | Dietmar Schapel | 1984-09-04 |
| 4402725 | Fertilizers | Dietmar Schapel, Claus Hentschel, Manfred Dahm | 1983-09-06 |
| 4396412 | Ion exchanger fertilizers | Herbert Corte | 1983-08-02 |
| 4319015 | Synthetic resins based on crosslinked copolymers of monovinyl and polyvinyl compounds | Werner Struver, Peter M. Lange | 1982-03-09 |