Issued Patents All Time
Showing 1–7 of 7 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 | Helmut Wietschorke, Ralf Sauer, Christoph Winter | 2025-02-18 |
| 11835801 | Spectacle lens, family of spectacle lenses, method for designing a family of spectacle lenses and method for producing a spectacle lens | — | 2023-12-05 |
| 11372263 | Bifocal spectacle lens, computer implemented method for creating a numerical representation of same, computer program, data processing system, and non-volatile computer readable storage medium | Ray Steven Spratt | 2022-06-28 |
| 11199726 | Spectacle lens, family of spectacle lenses, method for designing a family of spectacle lenses and method for producing a spectacle lens | — | 2021-12-14 |
| 10007128 | Method and device for establishing a target design | Ralf Sauer, Christoph Winter, Ray Steven Spratt | 2018-06-26 |
| 8205987 | Method for optimizing a spectacle lens for the wavefront aberrations of an eye and lens | Darryl Meister, Timo Kratzer, Jesús Miguel Cabeza Guillén, Ray Steven Spratt, Gerhard Kelch +1 more | 2012-06-26 |
| 7556381 | Method for producing a lens and a lens produced thereby | Gerhard Kelch, Timo Kratzer, Helmut Wietschorke | 2009-07-07 |