Issued Patents All Time
Showing 1–8 of 8 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 4853135 | Catalyst resins for the catalytic reduction of oxygen in aqueous media, the preparation of the catalyst resins, and new catalyst resins | Siegfried Oeckl, Paul Thomas | 1989-08-01 |
| 4705637 | Process for reducing the wash water requirement of weakly basic anion exchangers | Harold Heller, Peter M. Lange | 1987-11-10 |
| 4695556 | Catalyst resins and process for their preparation | Siegfried Oeckl, Alfred Mitschker, Peter M. Lange | 1987-09-22 |
| 4666608 | Method for rendering visible the line of separation between cation exchangers and anion exchangers in mixed-bed filters | — | 1987-05-19 |
| 4645604 | Process and device for treating liquids with cation exchangers and anion exchanges | — | 1987-02-24 |
| 4519916 | Process for internal regeneration of ion exchanger resins in mixed bed filters, and mixed bed filters for carrying out the process | — | 1985-05-28 |
| 4519917 | Counter-current adsorption filters for the treatment of liquids and a method of operating the filter | — | 1985-05-28 |
| 4400278 | Counter-current adsorption filters for the treatment of liquids and a method of operating the filter | — | 1983-08-23 |