Issued Patents All Time
Showing 1–7 of 7 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 7222367 | System for computer-aided monitoring of the use of licenses | Ralf Brese, Rainer Zimmermann, Bruno Bozionek, Achim Minderlein | 2007-05-22 |
| 7169441 | Method for making a UV-reflecting interference layer system | Bruno Vitt, Juergen Blankenburg, Karl-Heinz Dasecke, Birgit Lintner | 2007-01-30 |
| 6720081 | UV-reflective interference layer system | Bruno Vitt, Juergen Blankenburg, Karl-Heinz Dasecke, Birgit Lintner | 2004-04-13 |
| 5217927 | Highly refractive, low-density, phototropic glass | Reinhard Kassner | 1993-06-08 |
| 5104831 | Highly refractive, low-density, phototropic glass | Reinhard Kassner | 1992-04-14 |
| 4525462 | Dark blue dyed furnace sight glass with high infrared absorption | — | 1985-06-25 |
| 4473612 | Flashed glass | Georg Gliemeroth, Klaus Hanke | 1984-09-25 |