Issued Patents 1989
Showing 1–7 of 7 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 4889925 | Process for the purification of alkyl glycosides, products obtainable by this process and their use | Manfred Biermann | 1989-12-26 |
| 4874579 | Acylated 3-amino-1,2,4-triazoles as corrosion inhibitors for non-ferrous metals | Josef Penninger, Hinrich Moeller | 1989-10-17 |
| 4853145 | Alkyl and alkenyl diethanolamine compounds as solubilizers for low-foam surfactants | Adolf Asbeck, Detlev Stanislowski | 1989-08-01 |
| 4842695 | Arrangement of a dry cooler for coke | Friedrich Jokisch, Dieter H. W. Heese, Bruno Hillinger, Georg Beckmann, Norbert Heger | 1989-06-27 |
| 4839098 | Liquid detergent | Klaus-Dieter Wisotzki, Ortburg Guirr, Peter Jeschke, Klaus Schumann, Manfred Biermann | 1989-06-13 |
| 4832868 | Liquid surfactant mixtures | Alfred Meffert, Fritz Lange | 1989-05-23 |
| 4797222 | Foam inhibitor mixture | Rainer Hoefer, Adolf Asbeck, Uwe Held | 1989-01-10 |