Issued Patents All Time
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 5459297 | Method and apparatus for manufacturing a texture drum | Gerald Sermund, Michael Wilharm | 1995-10-17 |
| 5438179 | Method and apparatus for manufacturing texture drums | Gerald Sermund, Michael Wilharm | 1995-08-01 |
| 5324912 | Method and apparatus for manufacturing a texture drum | Gerald Sermund, Michael Wilharm | 1994-06-28 |
| 4549067 | Method for checking printing form surfaces engraved by means of an electron beam | Siegfried Beisswenger | 1985-10-22 |
| 4546232 | Method for the topically precise subsequent engraving of printing cylinders | Siegfried Beisswenger | 1985-10-08 |
| 4467205 | Highly-steady beam generating for charged particles | Siegfried Beisswenger | 1984-08-21 |
| 4393295 | Apparatus and method for engraving with an electron beam | Siegfried Beisswenger, Dieter Grieger | 1983-07-12 |