Issued Patents All Time
Showing 1–8 of 8 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 4986974 | Process for the separation of halogenated hydrocarbons from hydrochloric acid | Wilhelm Lendle, Heribert Tetzlaff, Bernhard Wojtech | 1991-01-22 |
| 4346066 | Purification of wet-process phosphoric acid | Reinhard Gradl, Klaus Schrodter, Klaus-Peter Ehlers | 1982-08-24 |
| 4279876 | Conversion of extraction residues originating from phosphoric acid decontamination to solid deposition products | Klaus Schrodter, Reinhard Gradl, Klaus-Peter Ehlers | 1981-07-21 |
| 4271128 | Apparatus for recovering alcoholic phosphoric acid solutions from acid phosphates | Klaus Schrodter, Klaus-Peter Ehlers | 1981-06-02 |
| 4222994 | Solvent extraction purification of wet-processed phosphoric acid | Klaus-Peter Ehlers, Klaus Schrodter, Gero Heymer | 1980-09-16 |
| 4203956 | Process and apparatus for recovering alcoholic phosphoric acid solutions from acid phosphates | Klaus Schrodter, Klaus-Peter Ehlers | 1980-05-20 |
| 4200620 | Decontamination of wet-processed phosphoric acid | Klaus-Peter Ehlers, Klaus Schrodter, Gero Heymer | 1980-04-29 |
| 4196180 | Purification of phosphoric acid by means of organic solvents | Bernhard Wojtech, Klaus-Peter Ehlers | 1980-04-01 |