Issued Patents All Time
Showing 1–3 of 3 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 4523958 | Pigment formulations and their use of pigmenting gravure printing inks and finishes | Rudolf Polster, Joachim Kranz, Eduard Hartmann | 1985-06-18 |
| 4490176 | Fluid, stable formulations | Joachim Kranz, Rudolf Polster | 1984-12-25 |
| 4350534 | Fluid, stable formulations of copper phthalocyanine or indanthrone | Joachim Kranz, Rudolf Polster | 1982-09-21 |