Issued Patents All Time
Showing 1–9 of 9 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 9057836 | Infrared absorbing glass wafer and method for producing same | Bianca Schreder, Jochen Freund, Ute Woelfel, Claude Martin, Christophe Baur +1 more | 2015-06-16 |
| 6333288 | Lead-free optical glasses | Silke Wolff, Magdalena Winkler-Trudewig | 2001-12-25 |
| 5759930 | Substantially spherical particles of lithium silicates with improved mechanical properties and improved surface quality | Mario Dalle Donne, Guster Schumacher, Volkmar Geiler, Burkhart Speit | 1998-06-02 |
| 5641347 | Barium-free dental glass having good x-ray absorption | Danuta Grabowski, Johann Daimer, Hartmut Paschke | 1997-06-24 |
| 5589427 | Substantially spherical particles of lithium silicates with improved mechanical properties and impaired surface quality | Mario Dalle Donne, Guster Schumacher, Volkmar Geiler, Burkhart Speit | 1996-12-31 |
| 5434111 | Lead- and barium-free crystal glass having high optical transmission | Peter Brix, Ludwig Gaschler | 1995-07-18 |
| 5137850 | Optical glass of negative anomalous partial dispersion in the blue region | Volkmar Geiler, Danuta Grabowski | 1992-08-11 |
| 5114813 | Method of forming stable images in electron beam writable glass compositions | Stephen W. Smoot, Joseph Hayden, Danuta Grabowski, Eva Holzel, Peter Nass +1 more | 1992-05-19 |
| 5100843 | Optical glass with negative anomalous partial dispersion | Danuta Grabowski, Volkmar Geiler | 1992-03-31 |