Issued Patents All Time
Showing 1–8 of 8 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 7481651 | Orthodontic device | Walter Ehrenberger, Rainer Weber, Klaus Wigger | 2009-01-27 |
| 5429499 | Orthodontic aid | — | 1995-07-04 |
| 5383784 | Auxiliary orthodontic appliance | — | 1995-01-24 |
| 5326259 | Marked orthodonic aid and method of manufacturing | Friedrich-Wilhelm Rohlcke | 1994-07-05 |
| 5242298 | Shaped bodies of transparent, polycrystalline alumina | — | 1993-09-07 |
| 5238402 | Marked orthodontic aid and method of manufacturing | Friedrich-Wilhelm Rohlcke | 1993-08-24 |
| 4968459 | Method for the production of transparent, polycrystalline alumina with a yellowish color tone | — | 1990-11-06 |
| 4699637 | Hydrogen permeation membrane | Nicolas Iniotakis, Claus-Benedict von der Decken, Heinrich Fedders, Werner Frohling | 1987-10-13 |