Issued Patents All Time
Showing 1–15 of 15 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 5430143 | Preparation of metal phthalocyanines by reacting ortho-dinitriles with metal complexes | Wolfgang Habermann | 1995-07-04 |
| 5082498 | Highly concentrated solid pigment formulations | Walter Kurtz, Karl Muench, Horst Belde | 1992-01-21 |
| 4956018 | Preparation of strong and soft-textured surface coating pigments | Alois Wiesenberger | 1990-09-11 |
| 4904798 | (4-amino-2-hydroxyphenyl-1-oxoisoindolenines, preparation thereof and hydrolysis thereof to 2-(4-amino-2-hydroxybenzoyl)benzoic acids | Bernd Landmann, Udo Mayer | 1990-02-27 |
| 4789739 | Preparation of polyhalocopper phthalocyanine pigments of high color strength | Karl Schmeidl | 1988-12-06 |
| 4680387 | Preparation of polyhalo-copper phthalocyanines having a high color strength | — | 1987-07-14 |
| 4523958 | Pigment formulations and their use of pigmenting gravure printing inks and finishes | Wolf D. Fechner, Rudolf Polster, Eduard Hartmann | 1985-06-18 |
| 4490176 | Fluid, stable formulations | Wolf D. Fechner, Rudolf Polster | 1984-12-25 |
| 4466867 | Production of blue iron hexacyanoferrate-III pigments | Wolfgang Habermann, Peter Hammes, Joachim Felger, Karl-Ludwig Hock, Friedrich Brunnmueller +3 more | 1984-08-21 |
| 4451339 | Preparation of blue iron hexacyanoferrate-III pigments, and the pigments obtained | Wolfgang Habermann, Harry Distler, Helmut Knittel, Karl-Ludwig Hock, Fritz Brunnmueller +1 more | 1984-05-29 |
| 4350534 | Fluid, stable formulations of copper phthalocyanine or indanthrone | Wolf D. Fechner, Rudolf Polster | 1982-09-21 |
| 4294620 | Phthalocyanine formulations | Reinhard Sappok | 1981-10-13 |
| 4256507 | Pigment formulations | Rudolf Polster, Reinhard Sappok, Alois Wiesenberger | 1981-03-17 |
| 4255203 | Pigment formulations | Reinhard Sappok | 1981-03-10 |
| 4239549 | Easily water-dispersed formulations of finely divided phthalocyanines | Wolfgang Fabian, Guenter Stoeckelmann | 1980-12-16 |