Issued Patents All Time
Showing 1–5 of 5 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 5077335 | Optically clear silicone compositions | Peter Schwabe, Reiner Voigt, Ottfried Schlak | 1991-12-31 |
| 4866148 | Hydrophilic copolymers, the use thereof as biomedical materials and contact-optical articles produced therefrom | Frank Wingler | 1989-09-12 |
| 4703097 | Optical contact objects | Frank Wingler | 1987-10-27 |
| 4533397 | Use of polymer alloys based on cellulose esters in contact ophthalmics, and contact lenses produced from the polymer alloys | Frank Wingler, Helmut Waniczek | 1985-08-06 |
| 4384097 | Contact lenses of methyl methacrylate copolymers | Frank Wingler, Bernd Leusner, Peter Schwabe | 1983-05-17 |