Issued Patents All Time
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 7112618 | Beaded black | Heinz Zoch, Jan Kopietz | 2006-09-26 |
| 6379445 | Paints and printing inks containing modified carbon blacks | Peter Stroh | 2002-04-30 |
| 6214383 | Precipitated silicas which contain an active substance | Heinz Esch, Robert Kuhlmann, Matthias Neumuller, Ralf Rausch, Klaus Thomas | 2001-04-10 |
| 6159275 | Paints and printing inks containing modified carbon blacks | Peter Stroh | 2000-12-12 |
| 5484581 | Process for the production of precipitated silica | Heinz Esch, Robert Kuhlmann, Mattias Neumueller, Ralf Rausch | 1996-01-16 |
| 5158764 | Dentifrice | Ivan Again, Vera Boyanova, Matthias Neumuller, Harald Dippmann | 1992-10-27 |