Issued Patents All Time
Showing 1–13 of 13 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 12122919 | Dichroic azo-azomethine dyes for liquid crystal compositions | Thomas Ruch, Frank Bachmann, Marie-Pascale Perritaz, Gerardus De Keyzer | 2024-10-22 |
| 11512048 | Heat sensitive recording material, and color developer | Frank Bachmann, Prachin Kolambkar, Vilas Wakhare, Priti Kulkarni, Robert M. O'Neil | 2022-11-29 |
| 8962140 | Functionalized core-shell nanoparticles | Martin Muller, Didier Bauer, Thomas Ruch, Wolfgang Schlenker, Christian Cremer | 2015-02-24 |
| 8287776 | Preparation of a photochromic ink | Marc Maurer, Max Hügin, Thomas Raimann, Bruno Inderbitzin, Andre Fuchs | 2012-10-16 |
| 7786313 | Heat-stable diketopyrrolopyrrole pigment mixtures | Olof Wallquist, Roman Lenz, Mathias Düggeli, Taher Yousaf, Gerardus De Keyzer | 2010-08-31 |
| 7417154 | Heat-stable diketopyrrolopyrrole pigment mixtures | Olof Wallquist, Roman Lenz, Mathias Düggeli, Taher Yousaf, Gerardus De Keyzer | 2008-08-26 |
| 7217803 | Benzimidazole-pyridone-based azo dyes | Thomas Raimann, Thomas Eichenberger, Max Hügin | 2007-05-15 |
| 6872839 | Benzofuran-2-one | Thomas Ruch, Olof Wallquist, Peter Nesvadba | 2005-03-29 |
| 6762224 | Compounds for mass colouration of high temperature polymers | Zhimin Hao | 2004-07-13 |
| 6355783 | Compounds for mass coloration of high temperature polymers | Zhimin Hao | 2002-03-12 |
| 6093834 | Preparation of perylene-3,4-dicarboxylic acid anhydrides | — | 2000-07-25 |
| 5900490 | Preparation of perylene-3, 4-Dicarboxylic acid anhydrides | — | 1999-05-04 |
| 5650513 | Process for preparing perylene-3,4-dicarboxylic acid derivatives, the derivatives thus prepared and their use | Heinz Langhals | 1997-07-22 |