Issued Patents All Time
Showing 1–7 of 7 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 9527874 | Process for surface modification of particulate solids | Torsten Gottschalk-Gaudig, Carl-Heinz Ehrke | 2016-12-27 |
| 8257674 | Particles having a small specific surface and a great thickening effect | Herbert Barthel | 2012-09-04 |
| 8142753 | Pyrogenic silica produced in a production facility with high capacity | Herbert Barthel | 2012-03-27 |
| 6800413 | Low-silanol silica | Herbert Barthel, Mario Heinemann, Franz Grünwald, Ute Volkel | 2004-10-05 |
| 6199602 | Large drums for high-dispersion, high air content solids, and a method for filling them | Armin Grossmann | 2001-03-13 |
| 5785941 | Process for preparing finely divided silica and apparatus for carrying out the process | Johann Huber | 1998-07-28 |
| 5682929 | Method for the filling and emptying of a receptacle | Franz Stadler, Peter Pfaffinger, Henry Hackbarth, Johann Lindhuber | 1997-11-04 |