Issued Patents All Time
Showing 1–4 of 4 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 5408280 | Process for rendering contact lenses hydrophilic | Horst Schafer, Bernhard Seiferling, Rolf Siegel | 1995-04-18 |
| 5264878 | Polymers and hard, gas-permeable contact lenses made therefrom | Erich Gruber, Horst Schafer, Bernhard Seiferling | 1993-11-23 |
| 5198477 | Contact lenses made from thermoformable material | Bernhard Seiferling | 1993-03-30 |
| 5196493 | Polymers and hard, gas-permeable contact lenses made therefrom | Erich Gruber, Horst Schafer, Bernhard Seiferling | 1993-03-23 |