Issued Patents All Time
Showing 26–29 of 29 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 4744892 | Process for dressing kaolinite by flotation | Holger Tesmann, Bohuslav Dobias | 1988-05-17 |
| 4737306 | Layered silicates of limited swelling power, a process for their production and their use in detergents and cleaning preparations | Winfried Wichelhaus, Horst Upadek | 1988-04-12 |
| 4714544 | Process for dressing kaolinite by flotation | Holger Tesmann, Bohuslav Dobias | 1987-12-22 |
| 4652271 | Coal suspension flowability improvers | Erna Kleiner | 1987-03-24 |