Issued Patents All Time
Showing 1–2 of 2 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 5470992 | Method for the synthesis of betaines containing.ltoreq.10 ppm of organically bound chlorine | Burghard Gruning, Willi Foitzik, Christian Weitemeyer | 1995-11-28 |
| 5354906 | Aqueous liquid solution of a betaine with a solids content of at least 40% by weight | Christian Weitemeyer, Willi Foitzik, Burghard Gruning, Uwe Begoihn | 1994-10-11 |