Issued Patents All Time
Showing 1–12 of 12 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 7074732 | Zinc-containing optical glass materials | Ina Mitra, Uwe Kolberg, Paul Kissl | 2006-07-11 |
| 6806216 | Zinc-containing optical glass materials | Ina Mitra, Uwe Kolberg, Paul Kissl | 2004-10-19 |
| 5750448 | Copper(II) oxide-containing aluminophosphate glasses | Uwe Kolberg, Alwin Weitzel, Magdalena Winkler-Trudewig | 1998-05-12 |
| 5641347 | Barium-free dental glass having good x-ray absorption | Marc Clement, Johann Daimer, Hartmut Paschke | 1997-06-24 |
| 5137850 | Optical glass of negative anomalous partial dispersion in the blue region | Marc Clement, Volkmar Geiler | 1992-08-11 |
| 5114813 | Method of forming stable images in electron beam writable glass compositions | Stephen W. Smoot, Joseph Hayden, Marc Clement, Eva Holzel, Peter Nass +1 more | 1992-05-19 |
| 5100843 | Optical glass with negative anomalous partial dispersion | Marc Clement, Volkmar Geiler | 1992-03-31 |
| 4824809 | Optical CdO and ThO.sub.2 -free glass with refractive indices of 1.73-1.78 abbe numbers of 30-34, and high devitrification stability | Ludwig Ross | 1989-04-25 |
| 4734389 | Highly refractive optical glass with refractive indices >1.83 and Abbe numbers <25, and with very good chemical stability | Ludwig Ross, Volkmar Geiler | 1988-03-29 |
| 4721690 | High PbO-content glasses in the system SiO.sub.2 --PbO--M.sub.2 O with increased chemical stability | Ludwig Ross, Burkhard Speit, Volkmar Geiler | 1988-01-26 |
| 4584279 | Optical glass with refractive indices>1.90, Abbe numbers>25 and high chemical stability | Ludwig Ross, Volkmar Geiler, Karl Mennemann, Georg Gliemeroth | 1986-04-22 |
| 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 | Karl Mennemann | 1984-09-18 |