Issued Patents All Time
Showing 1–2 of 2 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 12228803 | Computer implemented method of determining a base curve for a spectacle lens and method of manufacturing a spectacle lens | Markus Welscher, Helmut Wietschorke, Ralf Sauer | 2025-02-18 |
| 10007128 | Method and device for establishing a target design | Markus Welscher, Ralf Sauer, Ray Steven Spratt | 2018-06-26 |