Issued Patents All Time
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 11975999 | Method for further processing of a glass tube semi-finished product including thermal forming | André Witzmann, Andreas Wirth | 2024-05-07 |
| 11872188 | Method for manufacturing a glass tube semi-finished product or a hollow glass product made therefrom with markings, and uses of the same | André Witzmann, Reinhard Mannl | 2024-01-16 |
| 11542195 | Method for manufacturing a hollow glass product from a glass tube semi-finished product having markings, and uses of the same | André Witzmann, Reinhard Mannl | 2023-01-03 |
| 8872870 | Method and apparatus for marking glass | André Witzmann | 2014-10-28 |
| 6674043 | Method and apparatus for marking glass with a laser | André Witzmann | 2004-01-06 |
| 5902368 | Method for the heat-softened severance of glass tubes or plates | André Witzmann | 1999-05-11 |