Issued Patents All Time
Showing 1–9 of 9 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 6365541 | Alkoxylation catalyst | Hildegard Freundl | 2002-04-02 |
| 6326514 | Process for the preparation of ether carboxylic acids with low residual alcohol content | Peter Klug, Rainer Kupfer, Rudiger Winter | 2001-12-04 |
| 6303564 | Detergents, cleaning compositions and disinfectants comprising chlorine-active substances and fatty acid alkyl ester ethoxylates | Cheryl A. Littau | 2001-10-16 |
| 5600020 | Process for the preparation of alkoxylates using ester compounds as catalyst | Detlef Wehle, Gernot Kremer | 1997-02-04 |
| 5389280 | Stable and homogeneous aqueous formulations of surfactants | Thomas Martini, Karl-Heinz Keil | 1995-02-14 |
| 5210323 | Process for the preparation of alkoxylates having a narrow distribution of homologs using antimony pentahalide complexes as the catalyst | Rainer Kupfer | 1993-05-11 |
| 5012013 | Process for the purification of alkylene oxide adducts | Siegfried Billenstein | 1991-04-30 |
| 4992595 | Poly(alkoxy ether) mixed formals | Rolf Kleber, Siegfried Billenstein, Lothar Jaeckel | 1991-02-12 |
| 4431565 | Surface-active compounds, a process for their preparation and their use | Siegfried Billenstein, Hildegard Freundl, Fritz J. Gohlke, Johannes Macenka | 1984-02-14 |