Issued Patents All Time
Showing 1–3 of 3 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 5676838 | Process for isolating hydroxymonocarboxylic and tricarboxylic acids | Elfriede Sextl, Akos Kiss, Wiltrud Schaefer-Treffenfeldt, Sems Yonsel, Stefan Stockhammer | 1997-10-14 |
| 5342602 | Process for reducing the carbon content of aqueous hydrogen peroxide solutions | Gerhard Zimmer, Elfriede Sextl | 1994-08-30 |
| 5312980 | Process for the separation of amino acids from aqueous solutions | Sems Yonsel, Wiltrud Schafer-Treffenfeldt, Akos Kiss, Elfriede Sextl | 1994-05-17 |