Issued Patents All Time
Showing 26–37 of 37 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 7670973 | Lead and arsenic free optical glass with high refractive index | Ute Woelfel, Bianca Schreder, Stefanie Hansen | 2010-03-02 |
| 7638448 | Lead-free niobium-bismuth-phosphate optical glass with a high index of refraction | Silke Wolff, Ute Woelfel | 2009-12-29 |
| 7638450 | Lead and arsenic free optical lanthanum borate glass | Ute Woelfel, Stefanie Hansen | 2009-12-29 |
| 7553785 | Lead-free and arsenic-free niobium phosphate optical glass | Ute Woelfel, Stefanie Hansen | 2009-06-30 |
| 7396787 | Optical glass and process for making precise-pressed optical elements therefrom as well as said optical elements | Ute Woelfel, Silke Wolff | 2008-07-08 |
| 7217673 | Solarization stable borosilicate glass and uses thereof | Karin Naumann, Franz Ott, Herbert Stappen | 2007-05-15 |
| 7163904 | Colorless glasses/borosilicate glasses with special UV-edge | Steffen Grün, Johann Faderl | 2007-01-16 |
| 6899954 | Cadmium-free optical steep edge filters | Uwe Kolberg, Helge Vogt, Burkhard Speit, Hans-Werner Schock, Christine Köble +1 more | 2005-05-31 |
| 6852657 | Optical colored glasses | Uwe Kolberg, Ruediger Hentschel | 2005-02-08 |
| 6667259 | Optical colored glass, its use, and an optical long-pass cutoff filter | Rolf Clasen, Monika Gierke, Jochen Freund, Uwe Kolberg | 2003-12-23 |
| 6630420 | Glass with high proportion of zirconium-oxide and its uses | Karin Naumann, Norbert Greulich-Hickmann, Uwe Kolberg, Werner Kiefer | 2003-10-07 |
| 6420291 | Lead silicate glass and a process for setting a reduced surface resistance of the lead silicate glass | Peter Brix, Raimund Barden, Claus Nitsch, Wilfried Koudelka | 2002-07-16 |