Issued Patents All Time
Showing 1–12 of 12 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 5324354 | Pigment formulations containing a pigment, a colorant having an external basic group and a surfactant | Joachim Jesse, Juan Antonio Gonzalez Gomez, Paul Guenthert | 1994-06-28 |
| 5026429 | Metal oxide coated platelet-like organic pigments | Norbert Mronga, Werner Ostertag | 1991-06-25 |
| 4806580 | Stabilizer mixtures for plastics | Hubert Trauth, Wilhelm Weber, Peter Lechtken | 1989-02-21 |
| 4758663 | Isoindoline compound | Hans Scherer, Wolfgang Lotsch | 1988-07-19 |
| 4707548 | Bisisoindoline pigments | Wolfgang Lotsch, Peter Neumann | 1987-11-17 |
| 4629513 | Preparation of transparent golden yellow, thermally stable two-phase pigments of the general formula xZnO.ZnFe.sub.2 O.sub.4 | Werner Ostertag, Roland Bauer | 1986-12-16 |
| 4401815 | Isoindoline colorants | Wolfgang Lotsch, Reinhard Kemper, Wolfgang Elser | 1983-08-30 |
| 4373102 | Isoindoline dyes, their preparation and use | Peter Neumann, Wolfgang Elser, Wolf-Dieter Kermer | 1983-02-08 |
| 4371735 | Preparation of pigments having improved technological properties | Hans Scherer, Wolfgang Lotsch | 1983-02-01 |
| 4370270 | Novel pigmentary form of .beta.-copper phthalocyanine | Wolfgang Fabian | 1983-01-25 |
| 4344987 | Preparation of flaky mica pigments coated with metal oxides, and use of these pigments | Werner Ostertag, Knut Bittler | 1982-08-17 |
| 4328042 | Preparation of metallic pigments having a metallic luster | Werner Ostertag, Knut Bittler | 1982-05-04 |