Issued Patents All Time
Showing 1–5 of 5 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 8992025 | Rear projection apparatus and method for a rear projection apparatus | Eberhard Piehler, Guenther Benedix, Gertrud Blei, Thomas Maack | 2015-03-31 |
| 8985776 | Projection objective having four groups for projecting light onto a projection surface and a projector including the projection objective | Guenther Benedix, Gertrud Blei, Rainer Fischer, Eberhard Piehler | 2015-03-24 |
| 6860605 | Arrangement for the projection of a multi- coloured image into a projection surface | Gertrud Blei, Dietrich Schmidt | 2005-03-01 |
| 6728448 | Device for generating a quadrangular illuminating field and use of such device in an optical device comprising a surface to be illuminated having a predetermined shape | Dietrich Schmidt, Christfried Symanowski | 2004-04-27 |
| 6578999 | Device for generating a quadrangular illuminating field and use of such device in an optical device comprising a surface to be illuminated having a predetermined shape | Dietrich Schmidt, Christfried Symanowski | 2003-06-17 |