Issued Patents All Time
Showing 1–8 of 8 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 7022358 | Collagen membrane made from porcine skin | Zdenek Eckmayer, Rainer Dorstewitz, Josef Anton Böhni, Peter Geistlich | 2006-04-04 |
| 6752834 | Membrane for in guided tissue regeneration | Peter Geistlich, Zdenek Eckmayer | 2004-06-22 |
| 6482240 | Method of making a collagen membrane from porcine skin | Zdenek Eckmayer, Rainer Dorstewitz, Josef Anton Böhni, Peter Geistlich | 2002-11-19 |
| 6221109 | Method of protecting spinal area | Peter Geistlich, Philip J. Boyne | 2001-04-24 |
| 5240463 | Dyeing leather: exhaustion process using combination of pigment dispersion and aqueous solution of water-soluble sulfur dye | Peter Weinheimer, Norbert Ambrecht | 1993-08-31 |
| 5240466 | Dyeing leather with water-insoluble sulphur dyes | Wolfgang Bauer, Hubert Kruse, Gert Nagl, Jan Mast | 1993-08-31 |
| 4971835 | Processing for rendering leather hydrophobic and oleophobic by impregnation with fluoro chemicals | Norbert Munch, Gustav Hudec | 1990-11-20 |
| 4914764 | Bath pigmentation of leather | Jan Mast, Rainer Winter | 1990-04-10 |