Issued Patents All Time
Showing 1–6 of 6 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 7771047 | Error-tolerant progressive glass design | Helmut Altheimer, Gregor Esser, Andrea Welk, Leonhard Schmid, Martin Zimmermann +5 more | 2010-08-10 |
| 7673990 | Individual eyeglass lens | Gregor Esser, Helmut Altheimer, Norbert Awrath, Jochen Brosig, Walter Haimerl +4 more | 2010-03-09 |
| 6964478 | Progressive spectacle lens | Andrea Welk, Peter Baumbach, Walter Haimerl, Herbert Pfeiffer, Gregor Esser +8 more | 2005-11-15 |
| 6834957 | Progressive spectacle lens having a genuine short progression area | Andrea Welk, Peter Baumbach, Walter Haimeri, Gregor Esser, Helmut Altheimer +3 more | 2004-12-28 |
| 6669337 | Progressive spectacle lens with low swaying effects | Andrea Welk, Peter Baumbach, Walter Haimerl, Herbert Pfeiffer, Norbert Awrath +8 more | 2003-12-30 |
| 6655802 | Method for producing eyeglasses | Martin Zimmermann, Peter Baumbach, Walter Haimerl, Herbert Pfeiffer, Gregor Esser +5 more | 2003-12-02 |