Issued Patents All Time
Showing 1–9 of 9 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 10752510 | Coarse support silica particles | Claus-Peter Drexel, Frank Haselhuhn, Frank Heindl, Guenter Stein | 2020-08-25 |
| 7071257 | Precipitated silicas | Heinz Esch, Udo Gorl, Robert Kuhlmann | 2006-07-04 |
| 6977065 | Precipitated silicas | Heinz Esch, Udo Gorl, Robert Kuhlmann | 2005-12-20 |
| 6214383 | Precipitated silicas which contain an active substance | Heinz Esch, Robert Kuhlmann, Matthias Neumuller, Karin Otto, Klaus Thomas | 2001-04-10 |
| 5925708 | Precipitated silicas | Heinz Esch, Udo Gorl, Robert Kuhlmann | 1999-07-20 |
| 5914368 | Vinyl alcohol copolymers and water-soluble films containing them | Heinz Haschke, Franz Reiterer, Felix Wehrmann | 1999-06-22 |
| 5871867 | Precipitated silica | Heinz Esch, Robert Kuhlmann, Guenter Tuerk, Karl Meier, Walter Meon | 1999-02-16 |
| 5846506 | Precipitated silicas | Heinz Esch, Udo Gorl, Robert Kuhlmann | 1998-12-08 |
| 5484581 | Process for the production of precipitated silica | Heinz Esch, Robert Kuhlmann, Mattias Neumueller, Karin Otto | 1996-01-16 |