Issued Patents All Time
Showing 1–25 of 35 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 7048396 | Arrangement for polarization of light | Christfried Symanowski | 2006-05-23 |
| 6860605 | Arrangement for the projection of a multi- coloured image into a projection surface | Gertrud Blei, Gudrun Schroeter | 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 | Christfried Symanowski, Gudrun Schroeter | 2004-04-27 |
| 6594424 | Light mixing rod comprising an inlet area and an outlet area and use of such a light mixing rod in an optical device comprising a surface to be illuminated | Christfried Symanowski | 2003-07-15 |
| 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 | Christfried Symanowski, Gudrun Schroeter | 2003-06-17 |
| 6580469 | Projection device | Gerd Rieche, Juergen Pudenz, Hans-Juergen Meissner, Hans-Joachim Stoehr, Eberhard Piehler +1 more | 2003-06-17 |
| 4831778 | Upper window sash with projections for simplified sash installation and removal | David Johnson, J. Carson Jackson | 1989-05-23 |
| 4827685 | Insulator for rail interlock at upper/lower window sash interface | — | 1989-05-09 |
| D300256 | Frame member for windows | — | 1989-03-14 |
| D300255 | Frame member for windows | — | 1989-03-14 |
| 4725324 | Method of making a thermal barrier construction element | — | 1988-02-16 |
| 4688366 | Thermal barrier hollow or construction element | — | 1987-08-25 |
| D288244 | Corner joint for plastic windows | — | 1987-02-10 |
| D286434 | Plastic window frame corner or the like | — | 1986-10-28 |
| 4483099 | Window assembly | — | 1984-11-20 |
| 4427150 | Motor vehicle with a combustion engine | Richard van Basshuysen, Max Ruf | 1984-01-24 |
| D267746 | Frame member for windows or the like | — | 1983-01-25 |
| D266275 | Frame member for windows or the like | — | 1982-09-21 |
| 4309845 | Thermally insulated hinged windows and doors | — | 1982-01-12 |
| 4300965 | Process for cementing semiconductor discs to carrier plates and product so obtained | Bruno Meissner, Heinz-Jorg Rath, Dieter Regler, Jurgen Voss | 1981-11-17 |
| D261305 | Frame member for windows or the like | — | 1981-10-13 |
| D261306 | Frame member for windows or the like | — | 1981-10-13 |
| D261307 | Frame member for windows or the like | — | 1981-10-13 |
| D261308 | Frame member for windows or the like | — | 1981-10-13 |
| D261309 | Frame member for windows or the like | — | 1981-10-13 |