Issued Patents All Time
Showing 1–2 of 2 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 5591844 | Alkyl hydroxyalkyl cellulose ethers containing sulfoalkyl groups | Uwe Bartz, Heiner Klehr | 1997-01-07 |
| 5554768 | Substituted Succinimides | Rudolf Ehrler, Rainer Helwerth | 1996-09-10 |