Issued Patents All Time
Showing 1–5 of 5 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 7435857 | Method for producing pure α-alkoxy-Ω-hydroxy-polyalkylene glycols | Klaus Poellmann, Anton Strasser, Rainer Wagner | 2008-10-14 |
| 6180683 | Synergistic mixtures of alkylphenol-formaldehyde resins with oxalkylated amines as asphaltene dispersants | Dennis Miller, Michael Feustel, Axel Boris Vollmer, Dieter Hoffmann | 2001-01-30 |
| 5925775 | Amidopropyl-N-alkyl-polylhydroxyalkylamine compounds, processes for their preparation and their use | Gunter Prossel, Werner Skrypzak, Hans Scholz | 1999-07-20 |
| 5571934 | Process for preparing solutions of polyhydroxy-fatty acid amides having good color quality, and their use | Bernd Papenfuhs | 1996-11-05 |
| 5371250 | Process for the preparation of pure aqueous betaine solutions | Hubert Seitz | 1994-12-06 |