Issued Patents All Time
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 5472617 | Method of demulsifying crude oil and water mixtures with copolymers of acrylates or methacrylates and hydrophilic commonomers | Klaus Barthold, Richard Baur, Stevano Crema, Knut Oppenlaender | 1995-12-05 |
| 4935162 | Alkoxylated amido-containing polyamines and their use for breaking oil-in-water and water-in-oil emulsions | Klaus Barthold, Richard Baur, Rolf Fikentscher, Knut Oppenlaender | 1990-06-19 |
| 4814394 | Polyethers obtainable by reacting alkylolated bis-(4-hydroxyphenyl)-methanes with polyalkylene oxides, and their use as oil demulsifiers | Klaus Barthold, Knut Oppenlaender, Richard Baur | 1989-03-21 |