Issued Patents All Time
Showing 26–36 of 36 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 8715407 | High-gloss multilayer effect pigments having a non-silver interference color and a narrow size distribution, and method for the production thereof | Dirk Schumacher, Michael Grüner | 2014-05-06 |
| 8709148 | Coloured glass particles, method for the production thereof and use thereof | Stefan Trummer, Ulrich Schmidt, Dirk Schumacher, Christian Wolfrum | 2014-04-29 |
| 8197591 | Pearlescent pigments having a secondary coating comprising α-silanes and method for the production thereof | Ulrich Schmidt | 2012-06-12 |
| 8129021 | Effect pigments based on substrates formed from inorganic-organic mixed phases, production and use thereof | Ulrich Schmidt, Dirk Schumacher | 2012-03-06 |
| 7819966 | Surface-coated pearlescent pigments, process for preparing them, and their use | — | 2010-10-26 |
| 7651562 | Pigment and pigmented cosmetic preparation as well as method for production of the pigment | Thomas Schuster, Hans-Jorg Kremitzl, Gunter Sommer | 2010-01-26 |
| 7413599 | Coated pearlescent pigments with SiO2 and cerium oxide | Frank Henglein, Ulrich Schmidt, Peter Kruger | 2008-08-19 |
| 6428846 | Corrosion-stable aluminum pigments and process for the production thereof | Werner Ostertag, Gunter Sommer | 2002-08-06 |
| 6287695 | Corrosion-stable aluminum pigments and process for the production thereof | Werner Ostertag, Gunter Sommer | 2001-09-11 |
| 5993526 | Process for the production of a pearl shine pigment preparation | Gunter Sommer | 1999-11-30 |
| 4847374 | Process for the manufacture of N,N-(Dibenzohexatrienylene)ureas | Georg Acklin, Ernst Aufderhaar, Bernhard Raz, Ulrich Vogel | 1989-07-11 |