| 5707436 |
Process for the production of purple pigments |
Klaus-Dieter Fritsche, Norbert Giesecke, Kerstin Ruhnau |
1998-01-13 |
| 5589273 |
Process and agent for the production of purple decoration |
Norbert Giesecke, Klaus-Dieter Fritsche |
1996-12-31 |
| 5266109 |
EMI shielding pigments, a process for their preparation and their use |
Werner Voelker, Wilan Jerke, Kai Dorer, Karl-Anton Starz, Norbert Giesecke |
1993-11-30 |
| 5252522 |
Purple pigments, a process for their production and use thereof |
Karl-Anton Starz, Werner Voelker, Wilan Jerke, Kai Dorer |
1993-10-12 |
| 4487664 |
Method and electrolytic bath for the deposition of low carat bright gold-silver alloy coatings |
Rainer Schlodder, Norbert Giesecke |
1984-12-11 |
| 4358351 |
Alkaline bath for the electrolytic deposition of low carat yellow colored gold alloy layers |
Franz Simon, Werner Huth, Wolfgang Zilske |
1982-11-09 |