Issued Patents 2005
Showing 1–3 of 3 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 6974214 | B-spline optimization of optical glasses especially spectacle glasses with planes of symmetry | Andrea Welk, Helmut Altheimer, Peter Baumbach, Rainer Dorsch, Gregor Esser +1 more | 2005-12-13 |
| 6964478 | Progressive spectacle lens | Andrea Welk, Peter Baumbach, Walter Haimerl, Gregor Esser, Helmut Altheimer +8 more | 2005-11-15 |
| 6848788 | Progressive spectacle lens with low magnifying differences | Andrea Welk, Peter Baumbach, Walter Haimerl, Gregor Esser, Helmut Altheimer +1 more | 2005-02-01 |