Issued Patents All Time
Showing 1–3 of 3 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 4929705 | New polyisocyanate-polyaddition compounds, a process for their preparation and their use for the dispersion of solids | Jan Mazanek, Ulrich von Gizycki, Hanns P. Muller, Martin Wienkenhover, Volker Paulat +2 more | 1990-05-29 |
| 4909853 | Pigment preparations | Martin Wienkenhover, Volker Paulat, Wolfgang Karnath, Hans Schulze, Karlheinz Wolf | 1990-03-20 |
| 4576649 | Color enhanced permanent pigments from precipitated cationic dyes | Vincent S. Oliver, Walter Tames, Helmuth H. Prochaska | 1986-03-18 |