Issued Patents All Time
Showing 1–10 of 10 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 9650289 | Arsenic and antimony free, titanium oxide containing borosilicate glass and methods for the production thereof | Holger Wegener, Rainer Schwertfeger, Lenka Grygarova | 2017-05-16 |
| 8910393 | Drying apparatus for pourable material and method for producing a drying apparatus for pourable material | Günter Kuhn, Wolfgang Fix-Mumme | 2014-12-16 |
| 6853123 | Flat light source | Kurt Nattermann, Volker Seibert, Roland Bürkle | 2005-02-08 |
| 5565389 | Ophthalmic glass of high refractive index | — | 1996-10-15 |
| 5548353 | Ophthalmic glass of high refractive index | — | 1996-08-20 |
| 5424255 | High-refractive index phototropic glass | — | 1995-06-13 |
| 5217927 | Highly refractive, low-density, phototropic glass | Werner Behr | 1993-06-08 |
| 5104831 | Highly refractive, low-density, phototropic glass | Werner Behr | 1992-04-14 |
| 4507393 | Highly prefractive, low dispersion optical glass suitable for multifocal corrective lenses | Karl-Heinz Mader, Lee Melbourne Cook | 1985-03-26 |
| 4444893 | Highly refractive, low dispersion, low density optical glass suitable for corrective lenses | Karl-Heinz Mader | 1984-04-24 |