Issued Patents All Time
Showing 1–4 of 4 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 5070159 | Addition compounds, a process for the preparation, and their use, based on epoxy novolac-fatty amine adducts | Erwin Dietz, Andreas Sommer, Adolf Kroh, Jurgen Hohn, Wolfgang Rieper | 1991-12-03 |
| 5066687 | Powdered azo pigments with improved rheological properties, process for their preparation and their use | Wolfgang Rieper | 1991-11-19 |
| 4732618 | Powdered pigments with improved rheological properties, processes for their preparation and their use with a content of at least 5% of unsubstituted quinacridone | Ernst Spietschka, Adolf Kroh | 1988-03-22 |
| 4631330 | Addition compounds and process for their preparation | Erwin Dietz, Albert Munkel, Wolfgang Rieper, Adolf Kroh | 1986-12-23 |