Issued Patents All Time
Showing 1–5 of 5 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 7259509 | Phosphor coating composition for a mercury low-pressure discharge lamp for illuminating plants | Matthias Schiplage, Martin Zachau | 2007-08-21 |
| 6888174 | Opto-electronic semiconductor component | Klaus Höhn | 2005-05-03 |
| 6582493 | Method for recycling objects consisting of thoriated tungsten | — | 2003-06-24 |
| 5808411 | Fluorescence-suppressed quartz glass, and electric lamp with this quartz glass | Manfred Deisenhofer, Ekkehard Messner | 1998-09-15 |
| 5589734 | Electric lamp having a fluorescence-suppressed quartz-glass envelope, and quartz glass therefor | Manfred Deisenhofer, Ekkehard Messner | 1996-12-31 |