Issued Patents All Time
Showing 51–58 of 58 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 4539192 | Process for removing fluorine and organic compounds from prepurified wet processed phosphoric acid | Reinhard Gradl, Gero Heymer | 1985-09-03 |
| 4525333 | Process for separating gallium and indium from aqueous solutions | Gero Heymer, Werner Krause, Werner Pieper | 1985-06-25 |
| 4466948 | Process for removing heavy metal ions and arsenic from wet-processed phosphoric acid | Reinhard Gradl, Gero Heymer | 1984-08-21 |
| 4460549 | Recovery of uranium from wet-process phosphoric acid | Reinhard Gradl, Gero Heymer | 1984-07-17 |
| 4457848 | Process for after-treating extraction residues originating from the decontamination of phosphoric acid | Reinhard Gradl, Gero Heymer | 1984-07-03 |
| 4452768 | Process for removing heavy metal ions from wet-processed phosphoric acid | Reinhard Gradl, Werner Krause, Gero Heymer | 1984-06-05 |
| 4444729 | Multistage column for countercurrent extraction of liquids | Reinhard Gradl | 1984-04-24 |
| 4410466 | Process for extractively separating a mixture containing phosphoric acid monoalkylesters into its components | Werner Klose | 1983-10-18 |