Issued Patents All Time
Showing 1–16 of 16 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 9701568 | Highly refractive thin glasses | Uwe Kolberg, Holger Wegener, Monika Gierke, Ute Woelfel, Joerg Fechner | 2017-07-11 |
| 9018116 | Optical glass | Bianca Schreder, Ute Woelfel, Volker Dietrich | 2015-04-28 |
| 8404606 | Optical glass, optical elements made therefrom, method of making the optical elements from the glass, and optical components comprising one or more optical elements | Silke Wolff, Uwe Kolberg, Ute Woelfel, Thomas Lifka | 2013-03-26 |
| 7444837 | Method and device for melting glass using an induction-heated crucible with cooled crust | Hildegard Römer, Michael Leister, Uwe Kolberg, Guido Räke, Ernest Walter Schäfer +2 more | 2008-11-04 |
| 7297647 | Lead- and arsenic-free optical lanthanum flint glasses | Silke Wolff, Ute Woelfel | 2007-11-20 |
| 4719186 | Optical and ophthalmic glass with refractive indices greater than or equal to 1.56, Abbe numbers greater than or equal to 40 and densities less than or equal to 2.70 g/cm.sup.3 | Georg Gliemeroth, Ludwig Ross, Burkhard Speit, Volkmar Geiler, Hans-Georg Krolla +1 more | 1988-01-12 |
| 4642297 | Optical glass with refractive indexes of 1.60-1.69 and Abbe numbers of at least 54 with particularly low density and particularly good chemical stability | Danuta Grabowski geb. Marszalek | 1987-02-10 |
| 4584279 | Optical glass with refractive indices>1.90, Abbe numbers>25 and high chemical stability | Danuta Grabowski, Ludwig Ross, Volkmar Geiler, Georg Gliemeroth | 1986-04-22 |
| 4562161 | Optical and ophthalmic glass with refractive indices greater than or equal to 1.56, Abbe numbers greater than or equal to 40 and densities less than or equal to 2.70 g/cm.sup.3 | Georg Gliemeroth, Ludwig Ross, Burkhard Speit, Volkmar Geiler, Hans-Georg Krolla +1 more | 1985-12-31 |
| 4526874 | Optical light weight glass with a refractive index of >1.70, an Abbe index of >22 and a density of <3.5 G/CM.sup.3 | Danuta Grabowski geb. Marszalek, Ludwig Ross, Volkmar Geiler | 1985-07-02 |
| 4520115 | High absorbance Pb-containing glass for cathode ray tube picture screen | Burkhard Speit, Georg Gliemeroth | 1985-05-28 |
| 4472511 | Highly refractive, ThO.sub.2 -free optical glasses having refractive indices of 1.86-1.94 and Abbe-index numbers greater than or equal to 30 | Danuta Grabowski | 1984-09-18 |
| 4439531 | CdO-ThO.sub.2 -Free, highly refractive optical glass | Volkmar Geiler | 1984-03-27 |
| 4438211 | Optical and ophthalmic glass with refractive indices nd>1.58, Abbe numbers>45 and densities<2.75 g/cm.sup.3 | Georg Gliemeroth, Volkmar Geiler | 1984-03-20 |
| 4400473 | Acidproof, hydrolysis-resistant optical and ophathalmic glass of low density | Georg Gliemeroth, Volkmar Geiler | 1983-08-23 |
| 4390638 | Acidproof, hydrolysis-resistant optical and ophthalmic glass of low density | Georg Gliemeroth, Volkmar Geiler | 1983-06-28 |