Issued Patents All Time
Showing 1–9 of 9 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 7901502 | Dispersion which contains at least 2 types of particles | Herbert Barthel, Johann Doppelberger, Torsten Gottschalk-Gaudig, Stephan Loskot, Ute Voelkel | 2011-03-08 |
| 7014975 | Solids surface-modified with amino groups | Herbert Barthel, Bernd Pachaly, Andreas Bauer, Oliver Schaefer | 2006-03-21 |
| 6887518 | Silica with homogeneous layer of silylating agent | Herbert Barthel, August Altenbuchner | 2005-05-03 |
| 6800413 | Low-silanol silica | Herbert Barthel, Franz Grünwald, Helmut Maginot, Ute Volkel | 2004-10-05 |
| 6348557 | Crosslinkable organopolysiloxane materials | Herbert Barthel, August Altenbuchner, Johann Schuster, Lutz Eismann, Otto Rothenaicher | 2002-02-19 |
| 6183867 | Silicon dioxide which bears partially or fully silylated polysilicic acid chains on its surface | Herbert Barthel | 2001-02-06 |
| 5851715 | Process for the silylation of inorganic oxides | Herbert Barthel, Franz Herrmann, August Altenbuchner | 1998-12-22 |
| 5686054 | Process for the silylation of inorganic oxides | Herbert Barthel, Franz Herrmann, August Altenbuchner | 1997-11-11 |
| 4902570 | Process for preparing highly dispersed metal oxides whose surfaces are modified by an ammonium-functional organopolysiloxane as a positive chargeable controlling agent for toners | Johann Bindl, Johann Doppelberger, Hans-Peter Scherm | 1990-02-20 |